MediaStream audio: Refactor 3 separate "glue" implementations into one.

content/renderer/media/user_media_client_impl.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_USER_MEDIA_CLIENT_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_USER_MEDIA_CLIENT_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 13 matching lines @@
 #include "third_party/WebKit/public/platform/WebSourceInfo.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebMediaDeviceChangeObserver.h"
 #include "third_party/WebKit/public/web/WebMediaDevicesRequest.h"
 #include "third_party/WebKit/public/web/WebUserMediaClient.h"
 #include "third_party/WebKit/public/web/WebUserMediaRequest.h"
 #include "third_party/webrtc/api/mediastreaminterface.h"
 
 namespace content {
 class PeerConnectionDependencyFactory;
+class MediaStreamAudioSource;
 class MediaStreamDispatcher;
 class MediaStreamVideoSource;
 class VideoCapturerDelegate;
 
 // UserMediaClientImpl is a delegate for the Media Stream GetUserMedia API.
 // It ties together WebKit and MediaStreamManager
 // (via MediaStreamDispatcher and MediaStreamDispatcherHost)
 // in the browser process. It must be created, called and destroyed on the
 // render thread.
 class CONTENT_EXPORT UserMediaClientImpl
@@ skipping 68 matching lines @@
       blink::WebUserMediaRequest request_info,
       MediaStreamRequestResult result,
       const blink::WebString& result_name);
 
   virtual void EnumerateDevicesSucceded(
       blink::WebMediaDevicesRequest* request,
       blink::WebVector<blink::WebMediaDeviceInfo>& devices);
   virtual void EnumerateSourcesSucceded(
       blink::WebMediaStreamTrackSourcesRequest* request,
       blink::WebVector<blink::WebSourceInfo>& sources);
-  // Creates a MediaStreamVideoSource object.
-  // This is virtual for test purposes.
+
+  // Creates a MediaStreamAudioSource/MediaStreamVideoSource objects.
+  // These are virtual for test purposes.
+  virtual MediaStreamAudioSource* CreateAudioSource(
+      const StreamDeviceInfo& device,
+      const blink::WebMediaConstraints& constraints);
   virtual MediaStreamVideoSource* CreateVideoSource(
       const StreamDeviceInfo& device,
       const MediaStreamSource::SourceStoppedCallback& stop_callback);
 
   // Class for storing information about a WebKit request to create a
   // MediaStream.
   class UserMediaRequestInfo
       : public base::SupportsWeakPtr<UserMediaRequestInfo> {
    public:
     typedef base::Callback<void(UserMediaRequestInfo* request_info,
                                 MediaStreamRequestResult result,
                                 const blink::WebString& result_name)>
       ResourcesReady;
 
     UserMediaRequestInfo(int request_id,
                          const blink::WebUserMediaRequest& request,
                          bool enable_automatic_output_device_selection);
     ~UserMediaRequestInfo();
     int request_id;
     // True if MediaStreamDispatcher has generated the stream, see
     // OnStreamGenerated.
     bool generated;
     const bool enable_automatic_output_device_selection;
     blink::WebMediaStream web_stream;
     blink::WebUserMediaRequest request;
 
-    void StartAudioTrack(const blink::WebMediaStreamTrack& track,
-                         const blink::WebMediaConstraints& constraints);
+    void StartAudioTrack(const blink::WebMediaStreamTrack& track);
 
     blink::WebMediaStreamTrack CreateAndStartVideoTrack(
         const blink::WebMediaStreamSource& source,
         const blink::WebMediaConstraints& constraints);
 
     // Triggers |callback| when all sources used in this request have either
     // successfully started, or a source has failed to start.
     void CallbackOnTracksStarted(const ResourcesReady& callback);
 
     bool IsSourceUsed(const blink::WebMediaStreamSource& source) const;
@@ skipping 105 matching lines @@
   // Note: This member must be the last to ensure all outstanding weak pointers
   // are invalidated first.
   base::WeakPtrFactory<UserMediaClientImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UserMediaClientImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_USER_MEDIA_CLIENT_IMPL_H_