Reland of Use spec-compliant algorithm to select video devices in getUserMedia.

content/renderer/media/mock_media_stream_dispatcher.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 "content/renderer/media/mock_media_stream_dispatcher.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "content/public/common/media_stream_request.h"
 #include "media/base/audio_parameters.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 12 matching lines @@
       stop_video_device_counter_(0),
       session_id_(0),
       test_same_id_(false) {}
 
 MockMediaStreamDispatcher::~MockMediaStreamDispatcher() {}
 
 void MockMediaStreamDispatcher::GenerateStream(
     int request_id,
     const base::WeakPtr<MediaStreamDispatcherEventHandler>& event_handler,
     const StreamControls& controls,
-    const url::Origin& url) {
+    const url::Origin& security_origin,
+    bool is_processing_user_gesture) {
   // Audio and video share the same request so we use |audio_input_request_id_|
   // only.
   audio_input_request_id_ = request_id;
 
   stream_label_ = "local_stream" + base::IntToString(request_id);
   audio_input_array_.clear();
   video_array_.clear();
 
   if (controls.audio.requested) {
     AddAudioInputDeviceToArray(false, controls.audio.device_id);
@@ skipping 66 matching lines @@
   video.device.name = "usb video camera";
   video.device.type = MEDIA_DEVICE_VIDEO_CAPTURE;
   video.device.video_facing = facing_user
                                   ? media::MEDIA_VIDEO_FACING_USER
                                   : media::MEDIA_VIDEO_FACING_ENVIRONMENT;
   video.session_id = session_id_;
   video_array_.push_back(video);
 }
 
 }  // namespace content