Make cricket::VideoFrame inherit webrtc::VideoFrame.

webrtc/media/base/videobroadcaster_unittest.cc

Index: webrtc/media/base/videobroadcaster_unittest.cc
diff --git a/webrtc/media/base/videobroadcaster_unittest.cc b/webrtc/media/base/videobroadcaster_unittest.cc
index 58efbf3545628b5f5d43f9ed853baa130d0594cf..593c8e5151284ec91df4b252d7ba451877ffb8e1 100644
--- a/webrtc/media/base/videobroadcaster_unittest.cc
+++ b/webrtc/media/base/videobroadcaster_unittest.cc
@@ -140,12 +140,12 @@ TEST(VideoBroadcasterTest, SinkWantsBlackFrames) {
   buffer->InitializeData();
 
   cricket::WebRtcVideoFrame frame1(buffer, webrtc::kVideoRotation_0,
-                                   10 /* timestamp_us */, 0 /* frame_id */);
+                                   10 /* timestamp_us */);
   broadcaster.OnFrame(frame1);
   EXPECT_TRUE(sink1.black_frame());
-  EXPECT_EQ(10000, sink1.timestamp());
+  EXPECT_EQ(10, sink1.timestamp_us());
   EXPECT_FALSE(sink2.black_frame());
-  EXPECT_EQ(10000, sink2.timestamp());
+  EXPECT_EQ(10, sink2.timestamp_us());
 
   // Switch the sink wants.
   wants1.black_frames = false;
@@ -154,10 +154,10 @@ TEST(VideoBroadcasterTest, SinkWantsBlackFrames) {
   broadcaster.AddOrUpdateSink(&sink2, wants2);
 
   cricket::WebRtcVideoFrame frame2(buffer, webrtc::kVideoRotation_0,
-                                   30 /* timestamp_us */, 0 /* frame_id */);
+                                   30 /* timestamp_us */);
   broadcaster.OnFrame(frame2);
   EXPECT_FALSE(sink1.black_frame());
-  EXPECT_EQ(30000, sink1.timestamp());
+  EXPECT_EQ(30, sink1.timestamp_us());
   EXPECT_TRUE(sink2.black_frame());
-  EXPECT_EQ(30000, sink2.timestamp());
+  EXPECT_EQ(30, sink2.timestamp_us());
 }