Revert of Delete cricket::VideoFrame::GetTimeStamp.

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 6ebc1ae1415204b0f6dac022aa976e04aced925a..9f03ea9d167ba8638673e7e371fb810e8817e532 100644
--- a/webrtc/media/base/fakevideorenderer.h
+++ b/webrtc/media/base/fakevideorenderer.h
@@ -26,7 +26,7 @@
         width_(0),
         height_(0),
         rotation_(webrtc::kVideoRotation_0),
-        timestamp_us_(0),
+        timestamp_(0),
         num_rendered_frames_(0),
         black_frame_(false) {}
 
@@ -43,7 +43,7 @@
     width_ = frame.width();
     height_ = frame.height();
     rotation_ = frame.rotation();
-    timestamp_us_ = frame.timestamp_us();
+    timestamp_ = frame.GetTimeStamp();
     SignalRenderFrame(&frame);
   }
 
@@ -61,9 +61,9 @@
     return rotation_;
   }
 
-  int64_t timestamp_us() const {
+  int64_t timestamp() const {
     rtc::CritScope cs(&crit_);
-    return timestamp_us_;
+    return timestamp_;
   }
   int num_rendered_frames() const {
     rtc::CritScope cs(&crit_);
@@ -133,7 +133,7 @@
   int width_;
   int height_;
   webrtc::VideoRotation rotation_;
-  int64_t timestamp_us_;
+  int64_t timestamp_;
   int num_rendered_frames_;
   bool black_frame_;
   rtc::CriticalSection crit_;