Video Capture: Allow suspension of individual devices.

content/renderer/media/video_capture_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_VIDEO_CAPTURE_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 69 matching lines @@
   // Get capturing formats supported by this device.
   // |callback| will be invoked with the results.
   void GetDeviceSupportedFormats(const VideoCaptureDeviceFormatsCB& callback);
 
   // Get capturing formats currently in use by this device.
   // |callback| will be invoked with the results.
   void GetDeviceFormatsInUse(const VideoCaptureDeviceFormatsCB& callback);
 
   media::VideoCaptureSessionId session_id() const { return session_id_; }
 
+ protected:
+  // Note: Overridden only by unit test subclasses.
+  virtual void Send(IPC::Message* message);
+
  private:
   friend class VideoCaptureImplTest;
   friend class MockVideoCaptureImpl;
 
   // Carries a shared memory for transferring video frames from browser to
   // renderer.
   class ClientBuffer;
   class ClientBuffer2;
 
   // Contains information for a video capture client. Including parameters
@@ skipping 42 matching lines @@
                               double consumer_resource_utilization);
   void OnClientBufferFinished2(int buffer_id,
                                const scoped_refptr<ClientBuffer2>& buffer,
                                const gpu::SyncToken& release_sync_token,
                                double consumer_resource_utilization);
 
   void StopDevice();
   void RestartCapture();
   void StartCaptureInternal();
 
-  virtual void Send(IPC::Message* message);
-
   // Helpers.
   bool RemoveClient(int client_id, ClientInfoMap* clients);
 
   // Called (by an unknown thread) when all consumers are done with a VideoFrame
   // and its ref-count has gone to zero.  This helper function grabs the
   // RESOURCE_UTILIZATION value from the |metadata| and then runs the given
   // callback, to trampoline back to the IO thread with the values.
   static void DidFinishConsumingFrame(
       const media::VideoFrameMetadata* metadata,
       std::unique_ptr<gpu::SyncToken> release_sync_token,
@@ skipping 39 matching lines @@
   // in |client_buffers_|.
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoCaptureImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_H_