VideoCaptureInput enforce VideoFrame::render_time to be generated by webrtc clock.

webrtc/video/video_capture_input_unittest.cc

Index: webrtc/video/video_capture_input_unittest.cc
diff --git a/webrtc/video/video_capture_input_unittest.cc b/webrtc/video/video_capture_input_unittest.cc
index ff1194b3cb3b09cf0fe10c6160d148f7c94cc604..812efae3c29cd21fca68bba5bc00947c9fe4cc55 100644
--- a/webrtc/video/video_capture_input_unittest.cc
+++ b/webrtc/video/video_capture_input_unittest.cc
@@ -249,8 +249,7 @@ bool EqualFrames(const VideoFrame& frame1, const VideoFrame& frame2) {
 bool EqualTextureFrames(const VideoFrame& frame1, const VideoFrame& frame2) {
   return ((frame1.native_handle() == frame2.native_handle()) &&
           (frame1.width() == frame2.width()) &&
-          (frame1.height() == frame2.height()) &&
-          (frame1.render_time_ms() == frame2.render_time_ms()));
+          (frame1.height() == frame2.height()));
 }
 
 bool EqualBufferFrames(const VideoFrame& frame1, const VideoFrame& frame2) {
@@ -259,7 +258,6 @@ bool EqualBufferFrames(const VideoFrame& frame1, const VideoFrame& frame2) {
           (frame1.stride(kYPlane) == frame2.stride(kYPlane)) &&
           (frame1.stride(kUPlane) == frame2.stride(kUPlane)) &&
           (frame1.stride(kVPlane) == frame2.stride(kVPlane)) &&
-          (frame1.render_time_ms() == frame2.render_time_ms()) &&
           (frame1.allocated_size(kYPlane) == frame2.allocated_size(kYPlane)) &&
           (frame1.allocated_size(kUPlane) == frame2.allocated_size(kUPlane)) &&
           (frame1.allocated_size(kVPlane) == frame2.allocated_size(kVPlane)) &&