Implement browser-side logging to WebRtc log

content/browser/renderer_host/media/desktop_capture_device_aura_unittest.cc

 // Copyright 2013 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/browser/renderer_host/media/desktop_capture_device_aura.h"
 
 #include "base/synchronization/waitable_event.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/public/browser/desktop_media_id.h"
 #include "media/video/capture/video_capture_types.h"
@@ skipping 14 matching lines @@
 namespace content {
 namespace {
 
 const int kFrameRate = 30;
 
 class MockDeviceClient : public media::VideoCaptureDevice::Client {
  public:
   MOCK_METHOD2(ReserveOutputBuffer,
                scoped_refptr<Buffer>(media::VideoFrame::Format format,
                                      const gfx::Size& dimensions));
-  MOCK_METHOD0(OnError, void());
+  MOCK_METHOD1(OnError, void(const std::string& reason));
   MOCK_METHOD5(OnIncomingCapturedFrame,
                void(const uint8* data,
                     int length,
                     base::TimeTicks timestamp,
                     int rotation,
                     const media::VideoCaptureFormat& frame_format));
   MOCK_METHOD5(OnIncomingCapturedBuffer,
                void(const scoped_refptr<Buffer>& buffer,
                     media::VideoFrame::Format format,
                     const gfx::Size& dimensions,
@@ skipping 60 matching lines @@
   capture_params.requested_format.frame_rate = kFrameRate;
   capture_params.requested_format.pixel_format = media::PIXEL_FORMAT_I420;
   capture_params.allow_resolution_change = false;
   capture_device->AllocateAndStart(
       capture_params, client.PassAs<media::VideoCaptureDevice::Client>());
   capture_device->StopAndDeAllocate();
 }
 
 }  // namespace
 }  // namespace content