Make FakeVideoCaptureDeviceFactory configurable to arbitrary fake device configurations

media/capture/video/video_capture_device_factory.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/video_capture_device_factory.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "media/base/media_switches.h"
 #include "media/capture/video/fake_video_capture_device_factory.h"
 #include "media/capture/video/file_video_capture_device_factory.h"
 
 namespace media {
 
 // static
 std::unique_ptr<VideoCaptureDeviceFactory>
 VideoCaptureDeviceFactory::CreateFactory(
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
   const base::CommandLine* command_line =
       base::CommandLine::ForCurrentProcess();
   // Use a Fake or File Video Device Factory if the command line flags are
   // present, otherwise use the normal, platform-dependent, device factory.
   if (command_line->HasSwitch(switches::kUseFakeDeviceForMediaStream)) {
     if (command_line->HasSwitch(switches::kUseFileForFakeVideoCapture)) {
       return std::unique_ptr<VideoCaptureDeviceFactory>(
           new media::FileVideoCaptureDeviceFactory());
     } else {
-      return std::unique_ptr<VideoCaptureDeviceFactory>(
-          new media::FakeVideoCaptureDeviceFactory());
+      std::vector<FakeVideoCaptureDeviceSettings> config;
+      FakeVideoCaptureDeviceFactory::ParseFakeDevicesConfigFromOptionsString(
+          command_line->GetSwitchValueASCII(
+              switches::kUseFakeDeviceForMediaStream),
+          &config);
+      auto result = base::MakeUnique<media::FakeVideoCaptureDeviceFactory>();
+      result->SetToCustomDevicesConfig(config);
+      return std::move(result);
     }
   } else {
     // |ui_task_runner| is needed for the Linux ChromeOS factory to retrieve
     // screen rotations.
     return std::unique_ptr<VideoCaptureDeviceFactory>(
         CreateVideoCaptureDeviceFactory(ui_task_runner));
   }
 }
 
 VideoCaptureDeviceFactory::VideoCaptureDeviceFactory() {
@@ skipping 18 matching lines @@
 // static
 VideoCaptureDeviceFactory*
 VideoCaptureDeviceFactory::CreateVideoCaptureDeviceFactory(
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) {
   NOTIMPLEMENTED();
   return NULL;
 }
 #endif
 
 }  // namespace media