Add support for Tegra V4L2 VDA

content/common/gpu/media/v4l2_video_decode_accelerator.h

Index: content/common/gpu/media/v4l2_video_decode_accelerator.h
diff --git a/content/common/gpu/media/v4l2_video_decode_accelerator.h b/content/common/gpu/media/v4l2_video_decode_accelerator.h
index 0c6a4930714de29f9a10d33975255dc90d011f26..3665fea48784f243755c41d79e6350e5381f6df7 100644
--- a/content/common/gpu/media/v4l2_video_decode_accelerator.h
+++ b/content/common/gpu/media/v4l2_video_decode_accelerator.h
@@ -294,6 +294,13 @@ class CONTENT_EXPORT V4L2VideoDecodeAccelerator
   // Callback that indicates a picture has been cleared.
   void PictureCleared();
 
+  // This method determines whether a resolution change event processing
+  // is indeed required by returning true if either:
+  // - width or height of the new format is different than previous format.
+  // - V4L2_CID_MIN_BUFFERS_FOR_CAPTURE has changed.
+  // Returns false otherwise.
+  bool IsResolutionChangeNecessary();
+
   // Our original calling message loop for the child thread.
   scoped_refptr<base::MessageLoopProxy> child_message_loop_proxy_;