[cleanup] Fix redundant webrtc name specifier

This CL was uploaded by git cl split.

R=hta@webrtc.org

No-Iwyu: LSC
Bug: webrtc:42232595
Change-Id: I1dbd586b71231c70733b666155705181021eb292
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/390602
Auto-Submit: Evan Shrubsole <eshr@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#44582}

media/sctp/dcsctp_transport.cc

diff --git a/media/sctp/dcsctp_transport.cc b/media/sctp/dcsctp_transport.cc
index af2e6ea..529de89 100644
--- a/media/sctp/dcsctp_transport.cc
+++ b/media/sctp/dcsctp_transport.cc
@@ -706,7 +706,7 @@
 }
 
 void DcSctpTransport::OnDtlsTransportState(DtlsTransportInternal* transport,
-                                           webrtc::DtlsTransportState state) {
+                                           DtlsTransportState state) {
   if (state == DtlsTransportState::kNew && socket_) {
     // IF DTLS restart (DtlsTransportState::kNew)
     // THEN

media/sctp/dcsctp_transport_unittest.cc

diff --git a/media/sctp/dcsctp_transport_unittest.cc b/media/sctp/dcsctp_transport_unittest.cc
index d629722..fe16899 100644
--- a/media/sctp/dcsctp_transport_unittest.cc
+++ b/media/sctp/dcsctp_transport_unittest.cc
@@ -57,7 +57,7 @@
   // DataChannelSink
   MOCK_METHOD(void,
               OnDataReceived,
-              (int, DataMessageType, const webrtc::CopyOnWriteBuffer&));
+              (int, DataMessageType, const CopyOnWriteBuffer&));
   MOCK_METHOD(void, OnChannelClosing, (int));
   MOCK_METHOD(void, OnChannelClosed, (int));
   MOCK_METHOD(void, OnReadyToSend, ());
@@ -82,7 +82,7 @@
         .Times(1)
         .WillOnce(Return(ByMove(std::move(socket_ptr))));
 
-    sctp_transport_ = std::make_unique<webrtc::DcSctpTransport>(
+    sctp_transport_ = std::make_unique<DcSctpTransport>(
         env_, Thread::Current(), &fake_dtls_transport_,
         std::move(mock_dcsctp_socket_factory));
     sctp_transport_->SetDataChannelSink(&sink_);
@@ -90,10 +90,10 @@
   }
 
   FakeDtlsTransport fake_dtls_transport_;
-  webrtc::SimulatedClock simulated_clock_;
+  SimulatedClock simulated_clock_;
   Environment env_;
   dcsctp::MockDcSctpSocket* socket_;
-  std::unique_ptr<webrtc::DcSctpTransport> sctp_transport_;
+  std::unique_ptr<DcSctpTransport> sctp_transport_;
   NiceMock<MockDataChannelSink> sink_;
 };
 }  // namespace
@@ -290,8 +290,7 @@
   AutoThread main_thread;
   Peer peer_a;
 
-  EXPECT_CALL(peer_a.sink_,
-              OnDataReceived(1, webrtc::DataMessageType::kBinary, _))
+  EXPECT_CALL(peer_a.sink_, OnDataReceived(1, DataMessageType::kBinary, _))
       .Times(1);
 
   peer_a.sctp_transport_->OpenStream(1, kDefaultPriority);