[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 a472fb55257f2913ac2240dce33a35b2b2203e0f..403b8a7a6cfb433cf615fe3e2657133cab9437c9 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() = 0;
   virtual int GetDmaBufPitch() = 0;
   virtual gfx::BufferFormat GetBufferFormat() = 0;
+  virtual gfx::Size size() = 0;

[Pawel Osciak, 2015/11/20 10:09:18]

This should be a const method.

[william.xie1, 2015/11/23 03:33:58]

Done.

 
   // Sets the overlay plane to switch to at the next page flip.
   // |w| specifies the screen to display this overlay plane on.
@@ -49,9 +50,10 @@ class NativePixmap : public base::RefCountedThreadSafe<NativePixmap> {
   // 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)>
-      ProcessingCallback;
+  typedef base::Callback<scoped_refptr<NativePixmap>(
+      const scoped_refptr<NativePixmap>& pixmap,
+      gfx::Size,

[Pawel Osciak, 2015/11/20 10:09:18]

const&

[william.xie1, 2015/11/23 03:33:58]

Done.

+      gfx::BufferFormat)> ProcessingCallback;
 
   // Set callback function for the pixmap used for post processing.
   virtual void SetProcessingCallback(