Rewrite PeerConnection integration tests using better testing practices.

webrtc/media/base/fakevideorenderer.h

Index: webrtc/media/base/fakevideorenderer.h
diff --git a/webrtc/media/base/fakevideorenderer.h b/webrtc/media/base/fakevideorenderer.h
index 7255c05f83c8557d00cb053096e61961f8a0def9..3d2cc675325c33e4a6bab549e3e6d4888b402f5b 100644
--- a/webrtc/media/base/fakevideorenderer.h
+++ b/webrtc/media/base/fakevideorenderer.h
@@ -35,7 +35,7 @@ class FakeVideoRenderer : public rtc::VideoSinkInterface<webrtc::VideoFrame> {
     // tolerance on Y values. Some unit tests produce Y values close
     // to 16 rather than close to zero, for supposedly black frames.
     // Largest value observed is 34, e.g., running
-    // P2PTestConductor.LocalP2PTest16To9 (peerconnection_unittests).
+    // PeerConnectionIntegrationTest.SendAndReceive16To9AspectRatio.
     black_frame_ = CheckFrameColorYuv(0, 48, 128, 128, 128, 128, &frame);
     // Treat unexpected frame size as error.
     ++num_rendered_frames_;