getUserMeida: report device starting states

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 48 matching lines @@
   // 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_; }
 
   void SetVideoCaptureHostForTesting(mojom::VideoCaptureHost* service) {
     video_capture_host_for_testing_ = service;
   }
 
+  // mojom::VideoCaptureObserver implementation.
+  void OnStateChanged(mojom::VideoCaptureState state) override;
+  void OnBufferCreated(int32_t buffer_id,
+                       mojo::ScopedSharedBufferHandle handle) override;
+  void OnBufferReady(int32_t buffer_id,
+                     media::mojom::VideoFrameInfoPtr info) override;
+  void OnBufferDestroyed(int32_t buffer_id) override;
+
  private:
   friend class VideoCaptureImplTest;
   friend class MockVideoCaptureImpl;
 
   // Carries a shared memory for transferring video frames from browser to
   // renderer.
   class ClientBuffer;
 
   // Contains information about a video capture client, including capture
   //  parameters callbacks to the client.
   struct ClientInfo;
   using ClientInfoMap = std::map<int, ClientInfo>;
 
   using BufferFinishedCallback =
       base::Callback<void(double consumer_resource_utilization)>;
 
-  // mojom::VideoCaptureObserver implementation.
-  void OnStateChanged(mojom::VideoCaptureState state) override;
-  void OnBufferCreated(int32_t buffer_id,
-                       mojo::ScopedSharedBufferHandle handle) override;
-  void OnBufferReady(int32_t buffer_id,
-                     media::mojom::VideoFrameInfoPtr info) override;
-  void OnBufferDestroyed(int32_t buffer_id) override;
-
   // Sends an IPC message to browser process when all clients are done with the
   // buffer.
   void OnClientBufferFinished(int buffer_id,
                               const scoped_refptr<ClientBuffer>& buffer,
                               double consumer_resource_utilization);
 
   void StopDevice();
   void RestartCapture();
   void StartCaptureInternal();
 
@@ skipping 52 matching lines @@
   // media::VideoFrames constructed in OnBufferReceived() from buffers cached
   // in |client_buffers_|.
   base::WeakPtrFactory<VideoCaptureImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_CAPTURE_IMPL_H_