Improve the style of the objc wrapper for PeerConnectionInterface::SetBitrate.

BUG=webrtc:7395

Review-Url: https://codereview.webrtc.org/3011013002
Cr-Original-Commit-Position: refs/heads/master@{#19697}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 8b476173d897c8e88330de683f9f9e9c81e76589
diff --git a/sdk/objc/Framework/Classes/PeerConnection/RTCPeerConnection.mm b/sdk/objc/Framework/Classes/PeerConnection/RTCPeerConnection.mm
index 1709047..c08503e 100644
--- a/sdk/objc/Framework/Classes/PeerConnection/RTCPeerConnection.mm
+++ b/sdk/objc/Framework/Classes/PeerConnection/RTCPeerConnection.mm
@@ -369,9 +369,9 @@
   _peerConnection->SetRemoteDescription(observer, sdp.nativeDescription);
 }
 
-- (BOOL)setBitrateToMin:(NSNumber *_Nullable)minBitrateBps
-              toCurrent:(NSNumber *_Nullable)currentBitrateBps
-                  toMax:(NSNumber *_Nullable)maxBitrateBps {
+- (BOOL)setBweMinBitrateBps:(nullable NSNumber *)minBitrateBps
+          currentBitrateBps:(nullable NSNumber *)currentBitrateBps
+              maxBitrateBps:(nullable NSNumber *)maxBitrateBps {
   webrtc::PeerConnectionInterface::BitrateParameters params;
   if (minBitrateBps != nil) {
     params.min_bitrate_bps = rtc::Optional<int>(minBitrateBps.intValue);
diff --git a/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h b/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
index ce2df4d..7b0c449 100644
--- a/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
+++ b/sdk/objc/Framework/Headers/WebRTC/RTCPeerConnection.h
@@ -184,12 +184,14 @@
            completionHandler:
     (nullable void (^)(NSError * _Nullable error))completionHandler;
 
-/** Updates bandwidth estimation parameters. Null parameters will be unchanged.
- *  Returns true iff the parameters were successfully updated.
+/** Limits the bandwidth allocated for all RTP streams sent by this
+ *  PeerConnection. Nil parameters will be unchanged. Setting
+ * |currentBitrateBps| will force the available bitrate estimate to the given
+ *  value. Returns YES if the parameters were successfully updated.
  */
-- (BOOL)setBitrateToMin:(NSNumber *_Nullable)minBitrateBps
-              toCurrent:(NSNumber *_Nullable)currentBitrateBps
-                  toMax:(NSNumber *_Nullable)maxBitrateBps;
+- (BOOL)setBweMinBitrateBps:(nullable NSNumber *)minBitrateBps
+          currentBitrateBps:(nullable NSNumber *)currentBitrateBps
+              maxBitrateBps:(nullable NSNumber *)maxBitrateBps;
 
 /** Start or stop recording an Rtc EventLog. */
 - (BOOL)startRtcEventLogWithFilePath:(NSString *)filePath
@@ -200,9 +202,8 @@
 
 @interface RTCPeerConnection (Media)
 
-/**
- * Create an RTCRtpSender with the specified kind and media stream ID.
- * See RTCMediaStreamTrack.h for available kinds.
+/** Create an RTCRtpSender with the specified kind and media stream ID.
+ *  See RTCMediaStreamTrack.h for available kinds.
  */
 - (RTCRtpSender *)senderWithKind:(NSString *)kind streamId:(NSString *)streamId;
 
diff --git a/sdk/objc/Framework/UnitTests/RTCPeerConnectionTest.mm b/sdk/objc/Framework/UnitTests/RTCPeerConnectionTest.mm
index 429962d..bf3fc33 100644
--- a/sdk/objc/Framework/UnitTests/RTCPeerConnectionTest.mm
+++ b/sdk/objc/Framework/UnitTests/RTCPeerConnectionTest.mm
@@ -60,12 +60,12 @@
         [factory peerConnectionWithConfiguration:config constraints:contraints delegate:nil];
     newConfig = peerConnection.configuration;
 
-    EXPECT_TRUE([peerConnection setBitrateToMin:[NSNumber numberWithInt:100000]
-                                      toCurrent:[NSNumber numberWithInt:5000000]
-                                          toMax:[NSNumber numberWithInt:500000000]]);
-    EXPECT_FALSE([peerConnection setBitrateToMin:[NSNumber numberWithInt:2]
-                                       toCurrent:[NSNumber numberWithInt:1]
-                                           toMax:nullptr]);
+    EXPECT_TRUE([peerConnection setBweMinBitrateBps:[NSNumber numberWithInt:100000]
+                                  currentBitrateBps:[NSNumber numberWithInt:5000000]
+                                      maxBitrateBps:[NSNumber numberWithInt:500000000]]);
+    EXPECT_FALSE([peerConnection setBweMinBitrateBps:[NSNumber numberWithInt:2]
+                                   currentBitrateBps:[NSNumber numberWithInt:1]
+                                       maxBitrateBps:nil]);
   }
 
   EXPECT_EQ([config.iceServers count], [newConfig.iceServers count]);