diff --git a/call/BUILD.gn b/call/BUILD.gn
index 79c53b6..5f7c603 100644
--- a/call/BUILD.gn
+++ b/call/BUILD.gn
@@ -291,6 +291,7 @@
     "../system_wrappers:field_trial",
     "../system_wrappers:metrics",
     "../video",
+    "adaptation:resource_adaptation",
   ]
   absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
 }
diff --git a/call/adaptation/BUILD.gn b/call/adaptation/BUILD.gn
index d070a43..055fc43 100644
--- a/call/adaptation/BUILD.gn
+++ b/call/adaptation/BUILD.gn
@@ -14,6 +14,8 @@
     "adaptation_constraint.h",
     "adaptation_listener.cc",
     "adaptation_listener.h",
+    "broadcast_resource_listener.cc",
+    "broadcast_resource_listener.h",
     "encoder_settings.cc",
     "encoder_settings.h",
     "resource_adaptation_processor.cc",
@@ -57,6 +59,7 @@
     testonly = true
 
     sources = [
+      "broadcast_resource_listener_unittest.cc",
       "resource_adaptation_processor_unittest.cc",
       "resource_unittest.cc",
       "video_source_restrictions_unittest.cc",
@@ -96,6 +99,7 @@
       "test/fake_frame_rate_provider.h",
       "test/fake_resource.cc",
       "test/fake_resource.h",
+      "test/mock_resource_listener.h",
     ]
     deps = [
       ":resource_adaptation",
diff --git a/call/adaptation/broadcast_resource_listener.cc b/call/adaptation/broadcast_resource_listener.cc
new file mode 100644
index 0000000..2a4d8ca
--- /dev/null
+++ b/call/adaptation/broadcast_resource_listener.cc
@@ -0,0 +1,120 @@
+/*
+ *  Copyright 2020 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "call/adaptation/broadcast_resource_listener.h"
+
+#include <algorithm>
+#include <string>
+#include <utility>
+
+#include "rtc_base/checks.h"
+#include "rtc_base/critical_section.h"
+#include "rtc_base/ref_counted_object.h"
+
+namespace webrtc {
+
+// The AdapterResource redirects resource usage measurements from its parent to
+// a single ResourceListener.
+class BroadcastResourceListener::AdapterResource : public Resource {
+ public:
+  explicit AdapterResource(std::string name) : name_(std::move(name)) {}
+  ~AdapterResource() override { RTC_DCHECK(!listener_); }
+
+  // The parent is letting us know we have a usage neasurement.
+  void OnResourceUsageStateMeasured(ResourceUsageState usage_state) {
+    rtc::CritScope crit(&lock_);
+    if (!listener_)
+      return;
+    listener_->OnResourceUsageStateMeasured(this, usage_state);
+  }
+
+  // Resource implementation.
+  std::string Name() const override { return name_; }
+  void SetResourceListener(ResourceListener* listener) override {
+    rtc::CritScope crit(&lock_);
+    RTC_DCHECK(!listener_ || !listener);
+    listener_ = listener;
+  }
+
+ private:
+  const std::string name_;
+  rtc::CriticalSection lock_;
+  ResourceListener* listener_ RTC_GUARDED_BY(lock_) = nullptr;
+};
+
+BroadcastResourceListener::BroadcastResourceListener(
+    rtc::scoped_refptr<Resource> source_resource)
+    : source_resource_(source_resource), is_listening_(false) {
+  RTC_DCHECK(source_resource_);
+}
+
+BroadcastResourceListener::~BroadcastResourceListener() {
+  RTC_DCHECK(!is_listening_);
+}
+
+rtc::scoped_refptr<Resource> BroadcastResourceListener::SourceResource() const {
+  return source_resource_;
+}
+
+void BroadcastResourceListener::StartListening() {
+  rtc::CritScope crit(&lock_);
+  RTC_DCHECK(!is_listening_);
+  source_resource_->SetResourceListener(this);
+  is_listening_ = true;
+}
+
+void BroadcastResourceListener::StopListening() {
+  rtc::CritScope crit(&lock_);
+  RTC_DCHECK(is_listening_);
+  RTC_DCHECK(adapters_.empty());
+  source_resource_->SetResourceListener(nullptr);
+  is_listening_ = false;
+}
+
+rtc::scoped_refptr<Resource>
+BroadcastResourceListener::CreateAdapterResource() {
+  rtc::CritScope crit(&lock_);
+  RTC_DCHECK(is_listening_);
+  rtc::scoped_refptr<AdapterResource> adapter =
+      new rtc::RefCountedObject<AdapterResource>(source_resource_->Name() +
+                                                 "Adapter");
+  adapters_.push_back(adapter);
+  return adapter;
+}
+
+void BroadcastResourceListener::RemoveAdapterResource(
+    rtc::scoped_refptr<Resource> resource) {
+  rtc::CritScope crit(&lock_);
+  auto it = std::find(adapters_.begin(), adapters_.end(), resource);
+  RTC_DCHECK(it != adapters_.end());
+  adapters_.erase(it);
+}
+
+std::vector<rtc::scoped_refptr<Resource>>
+BroadcastResourceListener::GetAdapterResources() {
+  std::vector<rtc::scoped_refptr<Resource>> resources;
+  rtc::CritScope crit(&lock_);
+  for (const auto& adapter : adapters_) {
+    resources.push_back(adapter);
+  }
+  return resources;
+}
+
+void BroadcastResourceListener::OnResourceUsageStateMeasured(
+    rtc::scoped_refptr<Resource> resource,
+    ResourceUsageState usage_state) {
+  RTC_DCHECK_EQ(resource, source_resource_);
+  rtc::CritScope crit(&lock_);
+  for (const auto& adapter : adapters_) {
+    adapter->OnResourceUsageStateMeasured(usage_state);
+  }
+}
+
+}  // namespace webrtc
diff --git a/call/adaptation/broadcast_resource_listener.h b/call/adaptation/broadcast_resource_listener.h
new file mode 100644
index 0000000..f0d035d
--- /dev/null
+++ b/call/adaptation/broadcast_resource_listener.h
@@ -0,0 +1,75 @@
+/*
+ *  Copyright 2020 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef CALL_ADAPTATION_BROADCAST_RESOURCE_LISTENER_H_
+#define CALL_ADAPTATION_BROADCAST_RESOURCE_LISTENER_H_
+
+#include <vector>
+
+#include "api/adaptation/resource.h"
+#include "api/scoped_refptr.h"
+#include "rtc_base/critical_section.h"
+
+namespace webrtc {
+
+// Responsible for forwarding 1 resource usage measurement to N listeners by
+// creating N "adapter" resources.
+//
+// Example:
+// If we have ResourceA, ResourceListenerX and ResourceListenerY we can create a
+// BroadcastResourceListener that listens to ResourceA, use CreateAdapter() to
+// spawn adapter resources ResourceX and ResourceY and let ResourceListenerX
+// listen to ResourceX and ResourceListenerY listen to ResourceY. When ResourceA
+// makes a measurement it will be echoed by both ResourceX and ResourceY.
+//
+// TODO(https://crbug.com/webrtc/11565): When the ResourceAdaptationProcessor is
+// moved to call there will only be one ResourceAdaptationProcessor that needs
+// to listen to the injected resources. When this is the case, delete this class
+// and DCHECK that a Resource's listener is never overwritten.
+class BroadcastResourceListener : public ResourceListener {
+ public:
+  explicit BroadcastResourceListener(
+      rtc::scoped_refptr<Resource> source_resource);
+  ~BroadcastResourceListener() override;
+
+  rtc::scoped_refptr<Resource> SourceResource() const;
+  void StartListening();
+  void StopListening();
+
+  // Creates a Resource that redirects any resource usage measurements that
+  // BroadcastResourceListener receives to its listener.
+  rtc::scoped_refptr<Resource> CreateAdapterResource();
+
+  // Unregister the adapter from the BroadcastResourceListener; it will no
+  // longer receive resource usage measurement and will no longer be referenced.
+  // Use this to prevent memory leaks of old adapters.
+  void RemoveAdapterResource(rtc::scoped_refptr<Resource> resource);
+  std::vector<rtc::scoped_refptr<Resource>> GetAdapterResources();
+
+  // ResourceListener implementation.
+  void OnResourceUsageStateMeasured(rtc::scoped_refptr<Resource> resource,
+                                    ResourceUsageState usage_state) override;
+
+ private:
+  class AdapterResource;
+  friend class AdapterResource;
+
+  const rtc::scoped_refptr<Resource> source_resource_;
+  rtc::CriticalSection lock_;
+  bool is_listening_ RTC_GUARDED_BY(lock_);
+  // The AdapterResource unregisters itself prior to destruction, guaranteeing
+  // that these pointers are safe to use.
+  std::vector<rtc::scoped_refptr<AdapterResource>> adapters_
+      RTC_GUARDED_BY(lock_);
+};
+
+}  // namespace webrtc
+
+#endif  // CALL_ADAPTATION_BROADCAST_RESOURCE_LISTENER_H_
diff --git a/call/adaptation/broadcast_resource_listener_unittest.cc b/call/adaptation/broadcast_resource_listener_unittest.cc
new file mode 100644
index 0000000..9cd8050
--- /dev/null
+++ b/call/adaptation/broadcast_resource_listener_unittest.cc
@@ -0,0 +1,121 @@
+/*
+ *  Copyright 2020 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "call/adaptation/broadcast_resource_listener.h"
+
+#include "call/adaptation/test/fake_resource.h"
+#include "call/adaptation/test/mock_resource_listener.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+
+using ::testing::_;
+using ::testing::StrictMock;
+
+TEST(BroadcastResourceListenerTest, CreateAndRemoveAdapterResource) {
+  rtc::scoped_refptr<FakeResource> source_resource =
+      FakeResource::Create("SourceResource");
+  BroadcastResourceListener broadcast_resource_listener(source_resource);
+  broadcast_resource_listener.StartListening();
+
+  EXPECT_TRUE(broadcast_resource_listener.GetAdapterResources().empty());
+  rtc::scoped_refptr<Resource> adapter =
+      broadcast_resource_listener.CreateAdapterResource();
+  StrictMock<MockResourceListener> listener;
+  adapter->SetResourceListener(&listener);
+  EXPECT_EQ(std::vector<rtc::scoped_refptr<Resource>>{adapter},
+            broadcast_resource_listener.GetAdapterResources());
+
+  // The removed adapter is not referenced by the broadcaster.
+  broadcast_resource_listener.RemoveAdapterResource(adapter);
+  EXPECT_TRUE(broadcast_resource_listener.GetAdapterResources().empty());
+  // The removed adapter is not forwarding measurements.
+  EXPECT_CALL(listener, OnResourceUsageStateMeasured(_, _)).Times(0);
+  source_resource->SetUsageState(ResourceUsageState::kOveruse);
+  // Cleanup.
+  adapter->SetResourceListener(nullptr);
+  broadcast_resource_listener.StopListening();
+}
+
+TEST(BroadcastResourceListenerTest, AdapterNameIsBasedOnSourceResourceName) {
+  rtc::scoped_refptr<FakeResource> source_resource =
+      FakeResource::Create("FooBarResource");
+  BroadcastResourceListener broadcast_resource_listener(source_resource);
+  broadcast_resource_listener.StartListening();
+
+  rtc::scoped_refptr<Resource> adapter =
+      broadcast_resource_listener.CreateAdapterResource();
+  EXPECT_EQ("FooBarResourceAdapter", adapter->Name());
+
+  broadcast_resource_listener.RemoveAdapterResource(adapter);
+  broadcast_resource_listener.StopListening();
+}
+
+TEST(BroadcastResourceListenerTest, AdaptersForwardsUsageMeasurements) {
+  rtc::scoped_refptr<FakeResource> source_resource =
+      FakeResource::Create("SourceResource");
+  BroadcastResourceListener broadcast_resource_listener(source_resource);
+  broadcast_resource_listener.StartListening();
+
+  StrictMock<MockResourceListener> destination_listener1;
+  StrictMock<MockResourceListener> destination_listener2;
+  rtc::scoped_refptr<Resource> adapter1 =
+      broadcast_resource_listener.CreateAdapterResource();
+  adapter1->SetResourceListener(&destination_listener1);
+  rtc::scoped_refptr<Resource> adapter2 =
+      broadcast_resource_listener.CreateAdapterResource();
+  adapter2->SetResourceListener(&destination_listener2);
+
+  // Expect kOveruse to be echoed.
+  EXPECT_CALL(destination_listener1, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([adapter1](rtc::scoped_refptr<Resource> resource,
+                           ResourceUsageState usage_state) {
+        EXPECT_EQ(adapter1, resource);
+        EXPECT_EQ(ResourceUsageState::kOveruse, usage_state);
+      });
+  EXPECT_CALL(destination_listener2, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([adapter2](rtc::scoped_refptr<Resource> resource,
+                           ResourceUsageState usage_state) {
+        EXPECT_EQ(adapter2, resource);
+        EXPECT_EQ(ResourceUsageState::kOveruse, usage_state);
+      });
+  source_resource->SetUsageState(ResourceUsageState::kOveruse);
+
+  // Expect kUnderuse to be echoed.
+  EXPECT_CALL(destination_listener1, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([adapter1](rtc::scoped_refptr<Resource> resource,
+                           ResourceUsageState usage_state) {
+        EXPECT_EQ(adapter1, resource);
+        EXPECT_EQ(ResourceUsageState::kUnderuse, usage_state);
+      });
+  EXPECT_CALL(destination_listener2, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([adapter2](rtc::scoped_refptr<Resource> resource,
+                           ResourceUsageState usage_state) {
+        EXPECT_EQ(adapter2, resource);
+        EXPECT_EQ(ResourceUsageState::kUnderuse, usage_state);
+      });
+  source_resource->SetUsageState(ResourceUsageState::kUnderuse);
+
+  // Adapters have to be unregistered before they or the broadcaster is
+  // destroyed, ensuring safe use of raw pointers.
+  adapter1->SetResourceListener(nullptr);
+  adapter2->SetResourceListener(nullptr);
+
+  broadcast_resource_listener.RemoveAdapterResource(adapter1);
+  broadcast_resource_listener.RemoveAdapterResource(adapter2);
+  broadcast_resource_listener.StopListening();
+}
+
+}  // namespace webrtc
diff --git a/call/adaptation/resource_unittest.cc b/call/adaptation/resource_unittest.cc
index ee57f91..a2291df 100644
--- a/call/adaptation/resource_unittest.cc
+++ b/call/adaptation/resource_unittest.cc
@@ -14,6 +14,7 @@
 
 #include "api/scoped_refptr.h"
 #include "call/adaptation/test/fake_resource.h"
+#include "call/adaptation/test/mock_resource_listener.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
 
@@ -22,15 +23,6 @@
 using ::testing::_;
 using ::testing::StrictMock;
 
-class MockResourceListener : public ResourceListener {
- public:
-  MOCK_METHOD(void,
-              OnResourceUsageStateMeasured,
-              (rtc::scoped_refptr<Resource> resource,
-               ResourceUsageState usage_state),
-              (override));
-};
-
 class ResourceTest : public ::testing::Test {
  public:
   ResourceTest() : fake_resource_(FakeResource::Create("FakeResource")) {}
diff --git a/call/adaptation/test/mock_resource_listener.h b/call/adaptation/test/mock_resource_listener.h
new file mode 100644
index 0000000..f0f998f
--- /dev/null
+++ b/call/adaptation/test/mock_resource_listener.h
@@ -0,0 +1,31 @@
+/*
+ *  Copyright 2020 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef CALL_ADAPTATION_TEST_MOCK_RESOURCE_LISTENER_H_
+#define CALL_ADAPTATION_TEST_MOCK_RESOURCE_LISTENER_H_
+
+#include "api/adaptation/resource.h"
+
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockResourceListener : public ResourceListener {
+ public:
+  MOCK_METHOD(void,
+              OnResourceUsageStateMeasured,
+              (rtc::scoped_refptr<Resource> resource,
+               ResourceUsageState usage_state),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // CALL_ADAPTATION_TEST_MOCK_RESOURCE_LISTENER_H_
diff --git a/call/call.cc b/call/call.cc
index a76e737..ace83be 100644
--- a/call/call.cc
+++ b/call/call.cc
@@ -25,6 +25,7 @@
 #include "audio/audio_receive_stream.h"
 #include "audio/audio_send_stream.h"
 #include "audio/audio_state.h"
+#include "call/adaptation/broadcast_resource_listener.h"
 #include "call/bitrate_allocator.h"
 #include "call/flexfec_receive_stream_impl.h"
 #include "call/receive_time_calculator.h"
@@ -168,6 +169,47 @@
 
 namespace internal {
 
+// Wraps an injected resource in a BroadcastResourceListener and handles adding
+// and removing adapter resources to individual VideoSendStreams.
+class ResourceVideoSendStreamForwarder {
+ public:
+  ResourceVideoSendStreamForwarder(
+      rtc::scoped_refptr<webrtc::Resource> resource)
+      : broadcast_resource_listener_(resource) {
+    broadcast_resource_listener_.StartListening();
+  }
+  ~ResourceVideoSendStreamForwarder() {
+    RTC_DCHECK(adapter_resources_.empty());
+    broadcast_resource_listener_.StopListening();
+  }
+
+  rtc::scoped_refptr<webrtc::Resource> Resource() const {
+    return broadcast_resource_listener_.SourceResource();
+  }
+
+  void OnCreateVideoSendStream(VideoSendStream* video_send_stream) {
+    RTC_DCHECK(adapter_resources_.find(video_send_stream) ==
+               adapter_resources_.end());
+    auto adapter_resource =
+        broadcast_resource_listener_.CreateAdapterResource();
+    video_send_stream->AddAdaptationResource(adapter_resource);
+    adapter_resources_.insert(
+        std::make_pair(video_send_stream, adapter_resource));
+  }
+
+  void OnDestroyVideoSendStream(VideoSendStream* video_send_stream) {
+    auto it = adapter_resources_.find(video_send_stream);
+    RTC_DCHECK(it != adapter_resources_.end());
+    broadcast_resource_listener_.RemoveAdapterResource(it->second);
+    adapter_resources_.erase(it);
+  }
+
+ private:
+  BroadcastResourceListener broadcast_resource_listener_;
+  std::map<VideoSendStream*, rtc::scoped_refptr<webrtc::Resource>>
+      adapter_resources_;
+};
+
 class Call final : public webrtc::Call,
                    public PacketReceiver,
                    public RecoveredPacketReceiver,
@@ -335,8 +377,9 @@
       RTC_GUARDED_BY(worker_thread_);
   std::set<VideoSendStream*> video_send_streams_ RTC_GUARDED_BY(worker_thread_);
 
-  std::vector<rtc::scoped_refptr<Resource>> adaptation_resources_
-      RTC_GUARDED_BY(worker_thread_);
+  // Each forwarder wraps an adaptation resource that was added to the call.
+  std::vector<std::unique_ptr<ResourceVideoSendStreamForwarder>>
+      adaptation_resource_forwarders_ RTC_GUARDED_BY(worker_thread_);
 
   using RtpStateMap = std::map<uint32_t, RtpState>;
   RtpStateMap suspended_audio_send_ssrcs_ RTC_GUARDED_BY(worker_thread_);
@@ -860,9 +903,9 @@
     video_send_ssrcs_[ssrc] = send_stream;
   }
   video_send_streams_.insert(send_stream);
-  // Add resources that were previously added to the call to the new stream.
-  for (const auto& adaptation_resource : adaptation_resources_) {
-    send_stream->AddAdaptationResource(adaptation_resource);
+  // Forward resources that were previously added to the call to the new stream.
+  for (const auto& resource_forwarder : adaptation_resource_forwarders_) {
+    resource_forwarder->OnCreateVideoSendStream(send_stream);
   }
 
   UpdateAggregateNetworkState();
@@ -902,6 +945,10 @@
       ++it;
     }
   }
+  // Stop forwarding resources to the stream being destroyed.
+  for (const auto& resource_forwarder : adaptation_resource_forwarders_) {
+    resource_forwarder->OnDestroyVideoSendStream(send_stream_impl);
+  }
   video_send_streams_.erase(send_stream_impl);
 
   RTC_CHECK(send_stream_impl != nullptr);
@@ -1030,9 +1077,11 @@
 
 void Call::AddAdaptationResource(rtc::scoped_refptr<Resource> resource) {
   RTC_DCHECK_RUN_ON(worker_thread_);
-  adaptation_resources_.push_back(resource);
-  for (VideoSendStream* stream : video_send_streams_) {
-    stream->AddAdaptationResource(resource);
+  adaptation_resource_forwarders_.push_back(
+      std::make_unique<ResourceVideoSendStreamForwarder>(resource));
+  const auto& resource_forwarder = adaptation_resource_forwarders_.back();
+  for (VideoSendStream* send_stream : video_send_streams_) {
+    resource_forwarder->OnCreateVideoSendStream(send_stream);
   }
 }
 
diff --git a/call/call_unittest.cc b/call/call_unittest.cc
index d7a1f23..e165107 100644
--- a/call/call_unittest.cc
+++ b/call/call_unittest.cc
@@ -26,6 +26,7 @@
 #include "audio/audio_receive_stream.h"
 #include "audio/audio_send_stream.h"
 #include "call/adaptation/test/fake_resource.h"
+#include "call/adaptation/test/mock_resource_listener.h"
 #include "call/audio_state.h"
 #include "modules/audio_device/include/mock_audio_device.h"
 #include "modules/audio_processing/include/mock_audio_processing.h"
@@ -38,7 +39,9 @@
 
 namespace {
 
+using ::testing::_;
 using ::testing::Contains;
+using ::testing::StrictMock;
 
 struct CallHelper {
   explicit CallHelper(bool use_null_audio_processing) {
@@ -72,6 +75,20 @@
 
 namespace webrtc {
 
+namespace {
+
+rtc::scoped_refptr<Resource> FindResourceWhoseNameContains(
+    const std::vector<rtc::scoped_refptr<Resource>>& resources,
+    const std::string& name_contains) {
+  for (const auto& resource : resources) {
+    if (resource->Name().find(name_contains) != std::string::npos)
+      return resource;
+  }
+  return nullptr;
+}
+
+}  // namespace
+
 TEST(CallTest, ConstructDestruct) {
   for (bool use_null_audio_processing : {false, true}) {
     CallHelper call(use_null_audio_processing);
@@ -345,14 +362,50 @@
       bitrate_allocator_factory.get();
   VideoEncoderConfig encoder_config;
   encoder_config.max_bitrate_bps = 1337;
-  VideoSendStream* stream =
-      call->CreateVideoSendStream(std::move(config), std::move(encoder_config));
-  EXPECT_NE(stream, nullptr);
-  // Add a fake resource. It should get added to the stream.
+  VideoSendStream* stream1 =
+      call->CreateVideoSendStream(config.Copy(), encoder_config.Copy());
+  EXPECT_NE(stream1, nullptr);
+  config.rtp.ssrcs = {43};
+  VideoSendStream* stream2 =
+      call->CreateVideoSendStream(config.Copy(), encoder_config.Copy());
+  EXPECT_NE(stream2, nullptr);
+  // Add a fake resource.
   auto fake_resource = FakeResource::Create("FakeResource");
   call->AddAdaptationResource(fake_resource);
-  EXPECT_THAT(stream->GetAdaptationResources(), Contains(fake_resource));
-  call->DestroyVideoSendStream(stream);
+  // An adapter resource mirroring the |fake_resource| should now be present on
+  // both streams.
+  auto injected_resource1 = FindResourceWhoseNameContains(
+      stream1->GetAdaptationResources(), fake_resource->Name());
+  EXPECT_TRUE(injected_resource1);
+  auto injected_resource2 = FindResourceWhoseNameContains(
+      stream2->GetAdaptationResources(), fake_resource->Name());
+  EXPECT_TRUE(injected_resource2);
+  // Overwrite the real resource listeners with mock ones to verify the signal
+  // gets through.
+  injected_resource1->SetResourceListener(nullptr);
+  StrictMock<MockResourceListener> resource_listener1;
+  EXPECT_CALL(resource_listener1, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([injected_resource1](rtc::scoped_refptr<Resource> resource,
+                                     ResourceUsageState usage_state) {
+        EXPECT_EQ(injected_resource1, resource);
+        EXPECT_EQ(ResourceUsageState::kOveruse, usage_state);
+      });
+  injected_resource1->SetResourceListener(&resource_listener1);
+  injected_resource2->SetResourceListener(nullptr);
+  StrictMock<MockResourceListener> resource_listener2;
+  EXPECT_CALL(resource_listener2, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([injected_resource2](rtc::scoped_refptr<Resource> resource,
+                                     ResourceUsageState usage_state) {
+        EXPECT_EQ(injected_resource2, resource);
+        EXPECT_EQ(ResourceUsageState::kOveruse, usage_state);
+      });
+  injected_resource2->SetResourceListener(&resource_listener2);
+  // The kOveruse signal should get to our resource listeners.
+  fake_resource->SetUsageState(ResourceUsageState::kOveruse);
+  call->DestroyVideoSendStream(stream1);
+  call->DestroyVideoSendStream(stream2);
 }
 
 TEST(CallTest, AddAdaptationResourceBeforeCreatingVideoSendStream) {
@@ -374,12 +427,47 @@
       bitrate_allocator_factory.get();
   VideoEncoderConfig encoder_config;
   encoder_config.max_bitrate_bps = 1337;
-  VideoSendStream* stream =
-      call->CreateVideoSendStream(std::move(config), std::move(encoder_config));
-  EXPECT_NE(stream, nullptr);
-  // The fake resource should automatically get added to the stream.
-  EXPECT_THAT(stream->GetAdaptationResources(), Contains(fake_resource));
-  call->DestroyVideoSendStream(stream);
+  VideoSendStream* stream1 =
+      call->CreateVideoSendStream(config.Copy(), encoder_config.Copy());
+  EXPECT_NE(stream1, nullptr);
+  config.rtp.ssrcs = {43};
+  VideoSendStream* stream2 =
+      call->CreateVideoSendStream(config.Copy(), encoder_config.Copy());
+  EXPECT_NE(stream2, nullptr);
+  // An adapter resource mirroring the |fake_resource| should be present on both
+  // streams.
+  auto injected_resource1 = FindResourceWhoseNameContains(
+      stream1->GetAdaptationResources(), fake_resource->Name());
+  EXPECT_TRUE(injected_resource1);
+  auto injected_resource2 = FindResourceWhoseNameContains(
+      stream2->GetAdaptationResources(), fake_resource->Name());
+  EXPECT_TRUE(injected_resource2);
+  // Overwrite the real resource listeners with mock ones to verify the signal
+  // gets through.
+  injected_resource1->SetResourceListener(nullptr);
+  StrictMock<MockResourceListener> resource_listener1;
+  EXPECT_CALL(resource_listener1, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([injected_resource1](rtc::scoped_refptr<Resource> resource,
+                                     ResourceUsageState usage_state) {
+        EXPECT_EQ(injected_resource1, resource);
+        EXPECT_EQ(ResourceUsageState::kUnderuse, usage_state);
+      });
+  injected_resource1->SetResourceListener(&resource_listener1);
+  injected_resource2->SetResourceListener(nullptr);
+  StrictMock<MockResourceListener> resource_listener2;
+  EXPECT_CALL(resource_listener2, OnResourceUsageStateMeasured(_, _))
+      .Times(1)
+      .WillOnce([injected_resource2](rtc::scoped_refptr<Resource> resource,
+                                     ResourceUsageState usage_state) {
+        EXPECT_EQ(injected_resource2, resource);
+        EXPECT_EQ(ResourceUsageState::kUnderuse, usage_state);
+      });
+  injected_resource2->SetResourceListener(&resource_listener2);
+  // The kUnderuse signal should get to our resource listeners.
+  fake_resource->SetUsageState(ResourceUsageState::kUnderuse);
+  call->DestroyVideoSendStream(stream1);
+  call->DestroyVideoSendStream(stream2);
 }
 
 TEST(CallTest, SharedModuleThread) {