Revert of Delete cricket::VideoFrame::GetTimeStamp.

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 48b4ffec712624b324bc241987757f03e8bd5973..58efbf3545628b5f5d43f9ed853baa130d0594cf 100644
--- a/webrtc/media/base/videobroadcaster_unittest.cc
+++ b/webrtc/media/base/videobroadcaster_unittest.cc
@@ -143,9 +143,9 @@
                                    10 /* timestamp_us */, 0 /* frame_id */);
   broadcaster.OnFrame(frame1);
   EXPECT_TRUE(sink1.black_frame());
-  EXPECT_EQ(10, sink1.timestamp_us());
+  EXPECT_EQ(10000, sink1.timestamp());
   EXPECT_FALSE(sink2.black_frame());
-  EXPECT_EQ(10, sink2.timestamp_us());
+  EXPECT_EQ(10000, sink2.timestamp());
 
   // Switch the sink wants.
   wants1.black_frames = false;
@@ -157,7 +157,7 @@
                                    30 /* timestamp_us */, 0 /* frame_id */);
   broadcaster.OnFrame(frame2);
   EXPECT_FALSE(sink1.black_frame());
-  EXPECT_EQ(30, sink1.timestamp_us());
+  EXPECT_EQ(30000, sink1.timestamp());
   EXPECT_TRUE(sink2.black_frame());
-  EXPECT_EQ(30, sink2.timestamp_us());
+  EXPECT_EQ(30000, sink2.timestamp());
 }