[Ozone] Extends the lifetime of VaapiWrapper

ui/ozone/public/native_pixmap.h

Index: ui/ozone/public/native_pixmap.h
diff --git a/ui/ozone/public/native_pixmap.h b/ui/ozone/public/native_pixmap.h
index 38875c358007d52a9f5eedd9017dc6c600645a8e..becb85a6dbb39abcacd382bbb3f013baaae89925 100644
--- a/ui/ozone/public/native_pixmap.h
+++ b/ui/ozone/public/native_pixmap.h
@@ -28,6 +28,7 @@ class NativePixmap : public base::RefCountedThreadSafe<NativePixmap> {
   virtual int GetDmaBufFd() const = 0;
   virtual int GetDmaBufPitch() const = 0;
   virtual gfx::BufferFormat GetBufferFormat() const = 0;
+  virtual gfx::Size GetBufferSize() const = 0;
 
   // Sets the overlay plane to switch to at the next page flip.
   // |w| specifies the screen to display this overlay plane on.
@@ -47,10 +48,10 @@ class NativePixmap : public base::RefCountedThreadSafe<NativePixmap> {
                                     const gfx::RectF& crop_rect) = 0;
 
   // This represents a callback function pointing to processing unit like VPP to
-  // do post-processing operations on native pixmap with required size and
-  // format.
-  typedef base::Callback<scoped_refptr<NativePixmap>(gfx::Size,
-                                                     gfx::BufferFormat)>
+  // do post-processing operations like scaling and color space conversion on
+  // |source_pixmap| and save processed result to |target_pixmap|.
+  typedef base::Callback<bool(const scoped_refptr<NativePixmap>& source_pixmap,
+                              scoped_refptr<NativePixmap> target_pixmap)>
       ProcessingCallback;
 
   // Set callback function for the pixmap used for post processing.