Update MockPeerConnectionImpl::SetBitrate for webrtc api change.

See https://webrtc-review.googlesource.com/74020

Bug: None
Change-Id: I9f785c3ea49f744d75cd6d931d95240f1c0abf78
Reviewed-on: https://chromium-review.googlesource.com/1054293Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557959}

content/renderer/media/webrtc/mock_peer_connection_impl.cc

@@ -483,7 +483,7 @@ void MockPeerConnectionImpl::RegisterUMAObserver(
 }
 
 webrtc::RTCError MockPeerConnectionImpl::SetBitrate(
-    const BitrateParameters& bitrate) {
+    const webrtc::BitrateSettings& bitrate) {
   NOTIMPLEMENTED();
   return webrtc::RTCError::OK();
 }

content/renderer/media/webrtc/mock_peer_connection_impl.h

@@ -176,9 +176,7 @@ class MockPeerConnectionImpl : public webrtc::PeerConnectionInterface {
   bool AddIceCandidate(const webrtc::IceCandidateInterface* candidate) override;
   void RegisterUMAObserver(webrtc::UMAObserver* observer) override;
 
-  webrtc::RTCError SetBitrate(
-      const webrtc::PeerConnectionInterface::BitrateParameters& bitrate)
-      override;
+  webrtc::RTCError SetBitrate(const webrtc::BitrateSettings& bitrate) override;
 
   void AddRemoteStream(webrtc::MediaStreamInterface* stream);