Add frame refresh to VideoCaptureDevice, and buffer pool resurrection.

media/capture/video/video_capture_device_unittest.cc

Index: media/capture/video/video_capture_device_unittest.cc
diff --git a/media/capture/video/video_capture_device_unittest.cc b/media/capture/video/video_capture_device_unittest.cc
index 97b483568b2331d885d5633129acd19ade7206c0..ae340689840a665576febc5022fc1569190b86e3 100644
--- a/media/capture/video/video_capture_device_unittest.cc
+++ b/media/capture/video/video_capture_device_unittest.cc
@@ -85,6 +85,7 @@ class MockClient : public VideoCaptureDevice::Client {
   MOCK_METHOD0(DoReserveOutputBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedVideoFrame, void(void));
+  MOCK_METHOD0(DoResurrectLastOutputBuffer, void(void));
   MOCK_METHOD2(OnError,
                void(const tracked_objects::Location& from_here,
                     const std::string& reason));
@@ -123,6 +124,14 @@ class MockClient : public VideoCaptureDevice::Client {
                                     const base::TimeTicks& timestamp) override {
     DoOnIncomingCapturedVideoFrame();
   }
+  scoped_ptr<Buffer> ResurrectLastOutputBuffer(
+      const gfx::Size& dimensions,
+      media::VideoPixelFormat format,
+      media::VideoPixelStorage storage) {
+    DoResurrectLastOutputBuffer();
+    NOTREACHED() << "This should never be called";
+    return scoped_ptr<Buffer>();
+  }
 
  private:
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_;