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

content/browser/renderer_host/media/media_stream_manager.cc

Index: content/browser/renderer_host/media/media_stream_manager.cc
diff --git a/content/browser/renderer_host/media/media_stream_manager.cc b/content/browser/renderer_host/media/media_stream_manager.cc
index af543fc26d562756c7c3a4a2aa2e42cfd572ab9f..7d5c6e941b83fae254cf84e611464f94f87b1c5e 100644
--- a/content/browser/renderer_host/media/media_stream_manager.cc
+++ b/content/browser/renderer_host/media/media_stream_manager.cc
@@ -36,6 +36,9 @@
 #include "media/audio/audio_manager_base.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/channel_layout.h"
+#include "media/base/media_switches.h"
+#include "media/video/capture/fake_video_capture_device_factory.h"
+#include "media/video/capture/file_video_capture_device_factory.h"
 #include "url/gurl.h"
 
 #if defined(OS_WIN)
@@ -1435,10 +1438,18 @@ void MediaStreamManager::InitializeDeviceManagersOnIOThread() {
   io_loop_ = base::MessageLoop::current();
   io_loop_->AddDestructionObserver(this);
 
+  // Use a Fake Audio/Video Device if the command line flags are present.
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUseFakeDeviceForMediaStream)) {
-    DVLOG(1) << "Using fake device";
-    UseFakeDevice();
+    if (CommandLine::ForCurrentProcess()->HasSwitch(
+                      switches::kUseFileForFakeVideoCapture)) {
+      UseFakeVideoDevice(scoped_ptr<media::VideoCaptureDeviceFactory>(
+          new media::FileVideoCaptureDeviceFactory()));
+    } else {
+      UseFakeVideoDevice(scoped_ptr<media::VideoCaptureDeviceFactory>(
+          new media::FakeVideoCaptureDeviceFactory()));
+    }
+    UseFakeAudioDevice();
   }
 }
 
@@ -1791,9 +1802,14 @@ void MediaStreamManager::StopMediaStreamFromBrowser(const std::string& label) {
   CancelRequest(label);
 }
 
-void MediaStreamManager::UseFakeDevice() {
+void MediaStreamManager::UseFakeVideoDevice(
+    scoped_ptr<media::VideoCaptureDeviceFactory> factory) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  video_capture_manager()->UseFakeDevice(factory.Pass());
+}
+
+void MediaStreamManager::UseFakeAudioDevice() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  video_capture_manager()->UseFakeDevice();
   audio_input_device_manager()->UseFakeDevice();
 }