Reland [Mojo Video Capture] Add test coverage for accelerated jpeg decoding

media/capture/video/video_capture_device_client_unittest.cc

 // Copyright 2015 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 "media/capture/video/video_capture_device_client.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 25 matching lines @@
   MOCK_METHOD3(
       MockOnFrameReadyInBuffer,
       void(int buffer_id,
            std::unique_ptr<media::VideoCaptureDevice::Client::Buffer::
                                ScopedAccessPermission>* buffer_read_permission,
            const gfx::Size&));
   MOCK_METHOD0(OnError, void());
   MOCK_METHOD1(OnLog, void(const std::string& message));
   MOCK_METHOD1(OnBufferRetired, void(int buffer_id));
   MOCK_METHOD0(OnStarted, void());
+  MOCK_METHOD0(OnStartedUsingGpuDecode, void());
 
   void OnNewBufferHandle(
       int buffer_id,
       std::unique_ptr<media::VideoCaptureDevice::Client::Buffer::HandleProvider>
           handle_provider) override {
     MockOnNewBufferHandle(buffer_id);
   }
 
   void OnFrameReadyInBuffer(
       int32_t buffer_id,
@@ skipping 203 matching lines @@
 
     EXPECT_EQ(coded_size.width(), size_and_rotation.output_resolution.width());
     EXPECT_EQ(coded_size.height(),
               size_and_rotation.output_resolution.height());
 
     Mock::VerifyAndClearExpectations(controller_);
   }
 }
 
 }  // namespace media