Show camera and microphone status indicators.

content/browser/renderer_host/media/media_stream_manager.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.
 
 // MediaStreamManager is used to open/enumerate media capture devices (video
 // supported now). Call flow:
 // 1. GenerateStream is called when a render process wants to use a capture
 //    device.
 // 2. MediaStreamManager will ask MediaStreamDeviceSettings for permission to
 //    use devices and for which device to use.
@@ skipping 115 matching lines @@
   virtual void SettingsError(const std::string& label) OVERRIDE;
 
   // Used by unit test to make sure fake devices are used instead of a real
   // devices, which is needed for server based testing.
   void UseFakeDevice();
 
  private:
   // Contains all data needed to keep track of requests.
   struct DeviceRequest;
 
+  // Helpers for signaling the media observer that new capture devices are
+  // opened/closed.
+  void NotifyObserverDevicesOpened(DeviceRequest* request);
+  void NotifyObserverDevicesClosed(DeviceRequest* request);
+  void DevicesFromRequest(DeviceRequest* request,
+                          content::MediaStreamDevices* devices);
+
   // Helpers.
   bool RequestDone(const MediaStreamManager::DeviceRequest& request) const;
   MediaStreamProvider* GetDeviceManager(MediaStreamType stream_type);
   void StartEnumeration(DeviceRequest* new_request,
-                        int render_process_id,
-                        int render_view_id,
-                        const std::string& security_origin,
                         std::string* label);
 
   scoped_ptr<MediaStreamDeviceSettings> device_settings_;
   scoped_refptr<VideoCaptureManager> video_capture_manager_;
   scoped_refptr<AudioInputDeviceManager> audio_input_device_manager_;
 
   // Keeps track of device types currently being enumerated to not enumerate
   // when not necessary.
   std::vector<bool> enumeration_in_progress_;
 
   // All non-closed request.
   typedef std::map<std::string, DeviceRequest> DeviceRequests;
   DeviceRequests requests_;
   media::AudioManager* audio_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamManager);
 };
 
 }  // namespace media_stream
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_MANAGER_H_