Extract VideoCaptureDeviceFactory out of VideoCaptureDevice and use for File and FakeVCD.

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

 // Copyright (c) 2012 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 "base/bind.h"
+#include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/sync_socket.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/browser/media/media_internals.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
 #include "content/browser/renderer_host/media/audio_renderer_host.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/common/media/audio_messages.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "ipc/ipc_message_utils.h"
 #include "media/audio/audio_manager.h"
 #include "media/base/bind_to_current_loop.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
 using ::testing::Assign;
 using ::testing::DoAll;
@@ skipping 124 matching lines @@
   scoped_ptr<base::SyncSocket> sync_socket_;
   uint32 shared_memory_length_;
 
   DISALLOW_COPY_AND_ASSIGN(MockAudioRendererHost);
 };
 
 class AudioRendererHostTest : public testing::Test {
  public:
   AudioRendererHostTest() {
     audio_manager_.reset(media::AudioManager::CreateForTesting());
+    CommandLine::ForCurrentProcess()->AppendSwitch(
+        switches::kUseFakeDeviceForMediaStream);
     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
-    media_stream_manager_->UseFakeDevice();
     host_ = new MockAudioRendererHost(audio_manager_.get(),
                                       &mirroring_manager_,
                                       MediaInternals::GetInstance(),
                                       media_stream_manager_.get());
 
     // Simulate IPC channel connected.
     host_->set_peer_pid_for_testing(base::GetCurrentProcId());
   }
 
   virtual ~AudioRendererHostTest() {
@@ skipping 174 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, CreateUnifiedStreamAndClose) {
   Create(true);
   Close();
 }
 
 // TODO(hclam): Add tests for data conversation in low latency mode.
 
 }  // namespace content