ImageCapture: Implement takePhoto() for Windows

media/capture/video/linux/v4l2_capture_delegate.h

Index: media/capture/video/linux/v4l2_capture_delegate.h
diff --git a/media/capture/video/linux/v4l2_capture_delegate.h b/media/capture/video/linux/v4l2_capture_delegate.h
index 2ed379be80e5a51497f87860c57e8c40d1a1ef12..66b63c60b244d8cf5e1a6cd9651723d2b1d61a01 100644
--- a/media/capture/video/linux/v4l2_capture_delegate.h
+++ b/media/capture/video/linux/v4l2_capture_delegate.h
@@ -63,17 +63,14 @@ class V4L2CaptureDelegate final
   friend class base::RefCountedThreadSafe<V4L2CaptureDelegate>;
   ~V4L2CaptureDelegate();
 
+  class BufferTracker;
+
   // VIDIOC_QUERYBUFs a buffer from V4L2, creates a BufferTracker for it and
   // enqueues it (VIDIOC_QBUF) back into V4L2.
   bool MapAndQueueBuffer(int index);
 
   void DoCapture();
 
-  class BufferTracker;
-  mojom::BlobPtr GetPhotoBlob(
-      const scoped_refptr<BufferTracker>& buffer_tracker,
-      const uint32_t bytesused);
-
   void SetErrorState(const tracked_objects::Location& from_here,
                      const std::string& reason);