Add frame refresh to VideoCaptureDevice, and buffer pool resurrection.

media/capture/video/fake_video_capture_device_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 "media/capture/video/fake_video_capture_device.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 83 matching lines @@
     frame_cb_.Run(frame_format);
   }
   void OnIncomingCapturedVideoFrame(
       scoped_ptr<Buffer> buffer,
       const scoped_refptr<media::VideoFrame>& frame,
       const base::TimeTicks& timestamp) {
     VideoCaptureFormat format(frame->natural_size(), 30.0,
                               PIXEL_FORMAT_I420);
     frame_cb_.Run(format);
   }
-
+  scoped_ptr<Buffer> ResurrectLastOutputBuffer(
+      const gfx::Size& dimensions,
+      media::VideoPixelFormat format,
+      media::VideoPixelStorage storage) {
+    return scoped_ptr<Buffer>();
+  }
   double GetBufferPoolUtilization() const override { return 0.0; }
 
  private:
   base::Callback<void(const VideoCaptureFormat&)> frame_cb_;
 };
 
 class DeviceEnumerationListener
     : public base::RefCounted<DeviceEnumerationListener> {
  public:
   MOCK_METHOD1(OnEnumeratedDevicesCallbackPtr,
@@ skipping 152 matching lines @@
   }
 }
 
 INSTANTIATE_TEST_CASE_P(,
                         FakeVideoCaptureDeviceCommandLineTest,
                         Values(CommandLineTestData{"fps=-1", 5},
                                CommandLineTestData{"fps=29.97", 29.97f},
                                CommandLineTestData{"fps=60", 60},
                                CommandLineTestData{"fps=1000", 60}));
 };  // namespace media