Reland: Change VideoCaptureDeliverFrameCB's signature

content/renderer/media/media_stream_video_capture_source_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 247 matching lines @@
  public:
   FakeMediaStreamVideoSink(base::TimeTicks* capture_time,
                            media::VideoFrameMetadata* metadata,
                            base::Closure got_frame_cb)
       : capture_time_(capture_time),
         metadata_(metadata),
         got_frame_cb_(got_frame_cb) {
   }
 
   void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame,
-                    const base::TimeTicks& capture_time) {
+                    base::TimeTicks capture_time) {
     *capture_time_ = capture_time;
     metadata_->Clear();
     base::DictionaryValue tmp;
     frame->metadata()->MergeInternalValuesInto(&tmp);
     metadata_->MergeInternalValuesFrom(tmp);
     base::ResetAndReturn(&got_frame_cb_).Run();
   }
 
  private:
   base::TimeTicks* const capture_time_;
@@ skipping 39 matching lines @@
   run_loop.Run();
   FakeMediaStreamVideoSink::RemoveFromVideoTrack(&fake_sink, track);
   EXPECT_EQ(reference_capture_time, capture_time);
   double metadata_value;
   EXPECT_TRUE(metadata.GetDouble(media::VideoFrameMetadata::FRAME_RATE,
                                  &metadata_value));
   EXPECT_EQ(30.0, metadata_value);
 }
 
 }  // namespace content