Revert of RELAND: ImageCapture: Implement takePhoto() for Mac AVFoundation

media/capture/video/mac/video_capture_device_mac.h

Index: media/capture/video/mac/video_capture_device_mac.h
diff --git a/media/capture/video/mac/video_capture_device_mac.h b/media/capture/video/mac/video_capture_device_mac.h
index 7eff128ab1e0b50ee05c893364027f5625fb78af..88b986b6fa0a5dcc66e848a8d0c97101d8a358d6 100644
--- a/media/capture/video/mac/video_capture_device_mac.h
+++ b/media/capture/video/mac/video_capture_device_mac.h
@@ -62,25 +62,16 @@
       const VideoCaptureParams& params,
       std::unique_ptr<VideoCaptureDevice::Client> client) override;
   void StopAndDeAllocate() override;
-  void TakePhoto(TakePhotoCallback callback) override;
 
   bool Init(VideoCaptureDevice::Name::CaptureApiType capture_api_type);
 
-  // Called to deliver captured video frames.  It's safe to call this method
-  // from any thread, including those controlled by AVFoundation.
+  // Called to deliver captured video frames.
   void ReceiveFrame(const uint8_t* video_frame,
                     int video_frame_length,
                     const VideoCaptureFormat& frame_format,
                     int aspect_numerator,
                     int aspect_denominator,
                     base::TimeDelta timestamp);
-
-  // Callbacks with the result of a still image capture, or in case of error,
-  // respectively. It's safe to call these methods from any thread.
-  void OnPhotoTaken(const uint8_t* image_data,
-                    size_t image_length,
-                    const std::string& mime_type);
-  void OnPhotoError();
 
   // Forwarder to VideoCaptureDevice::Client::OnError().
   void ReceiveError(const tracked_objects::Location& from_here,
@@ -108,9 +99,6 @@
 
   base::scoped_nsobject<VideoCaptureDeviceAVFoundation> capture_device_;
 
-  // To hold on to the TakePhotoCallback while the picture is being taken.
-  std::unique_ptr<TakePhotoCallback> photo_callback_;
-
   // Used with Bind and PostTask to ensure that methods aren't called after the
   // VideoCaptureDeviceMac is destroyed.
   // NOTE: Weak pointers must be invalidated before all other member variables.