Add GetPreferredFormats method to media::VideoCapturerSource.

content/renderer/media/media_stream_video_capturer_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 "content/renderer/media/media_stream_video_capturer_source.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
@@ skipping 24 matching lines @@
         .WillByDefault(WithArgs<3>(
             Invoke(this, &MockVideoCapturerSource::EnumerateDeviceFormats)));
   }
 
   MOCK_METHOD0(RequestRefreshFrame, void());
   MOCK_METHOD4(GetCurrentSupportedFormats,
               void(int max_requested_width,
                    int max_requested_height,
                    double max_requested_frame_rate,
                    const VideoCaptureDeviceFormatsCB& callback));
+  MOCK_METHOD0(GetPreferredFormats, media::VideoCaptureFormats());
   MOCK_METHOD3(StartCapture,
                void(const media::VideoCaptureParams& params,
                     const VideoCaptureDeliverFrameCB& new_frame_callback,
                     const RunningCallback& running_callback));
   MOCK_METHOD0(StopCapture, void());
 
   void EnumerateDeviceFormats(const VideoCaptureDeviceFormatsCB& callback) {
     media::VideoCaptureFormat kFormatSmall(gfx::Size(640, 480), 30.0,
                                            media::PIXEL_FORMAT_I420);
     media::VideoCaptureFormat kFormatLarge(gfx::Size(1920, 1080), 30.0,
@@ skipping 341 matching lines @@
   run_loop.Run();
   fake_sink.DisconnectFromTrack();
   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