ImageCapture: ScopedResultCallback

content/browser/renderer_host/media/video_capture_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.
 
 // VideoCaptureManager is used to open/close, start/stop, enumerate available
 // video capture devices, and manage VideoCaptureController's.
 // All functions are expected to be called from Browser::IO thread. Some helper
 // functions (*OnDeviceThread) will dispatch operations to the device thread.
 // VideoCaptureManager will open OS dependent instances of VideoCaptureDevice.
 // A device can only be opened once.
@@ skipping 141 matching lines @@
     device_task_runner_ = device_task_runner;
   }
 #endif
 
   // Returns the SingleThreadTaskRunner where devices are enumerated on and
   // started.
   scoped_refptr<base::SingleThreadTaskRunner>& device_task_runner() {
     return device_task_runner_;
   }
 
-  bool TakePhoto(int session_id,
-                 const VideoCaptureDevice::TakePhotoCallback& photo_callback)
-      WARN_UNUSED_RESULT;
+  void TakePhoto(int session_id,
+                 media::ScopedResultCallback<
+                     VideoCaptureDevice::TakePhotoCallback> callback);
 
  private:
   class DeviceEntry;
 
   ~VideoCaptureManager() override;
 
   // Checks to see if |entry| has no clients left on its controller. If so,
   // remove it from the list of devices, and delete it asynchronously. |entry|
   // may be freed by this function.
   void DestroyDeviceEntryIfNoClients(DeviceEntry* entry);
@@ skipping 63 matching lines @@
       std::unique_ptr<VideoCaptureDevice::Client> client);
 
   std::unique_ptr<VideoCaptureDevice> DoStartDesktopCaptureOnDeviceThread(
       const std::string& device_id,
       const media::VideoCaptureParams& params,
       std::unique_ptr<VideoCaptureDevice::Client> client);
 
   // Stops and destroys the VideoCaptureDevice held in |device|.
   void DoStopDeviceOnDeviceThread(std::unique_ptr<VideoCaptureDevice> device);
 
-  void DoTakePhotoOnDeviceThread(
-      media::VideoCaptureDevice* device,
-      const VideoCaptureDevice::TakePhotoCallback& photo_callback);
-
   media::VideoCaptureDeviceInfo* FindDeviceInfoById(
       const std::string& id,
       media::VideoCaptureDeviceInfos& device_vector);
 
   void MaybePostDesktopCaptureWindowId(media::VideoCaptureSessionId session_id);
   void SetDesktopCaptureWindowIdOnDeviceThread(
       media::VideoCaptureDevice* device,
       gfx::NativeViewId window_id);
 
 #if defined(OS_MACOSX)
@@ skipping 68 matching lines @@
   // Map used by DesktopCapture.
   std::map<media::VideoCaptureSessionId, gfx::NativeViewId>
       notification_window_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_MANAGER_H_