Use MediaCodec.setOutputSurface() for fullscreen transitions on M.

media/gpu/avda_picture_buffer_manager.h

Index: media/gpu/avda_picture_buffer_manager.h
diff --git a/media/gpu/avda_picture_buffer_manager.h b/media/gpu/avda_picture_buffer_manager.h
index 0a900fee2c7b05989e412f54dfb43a5d165b8fed..e2f0808d8b6e1166cd509063431ac667ed57ceba 100644
--- a/media/gpu/avda_picture_buffer_manager.h
+++ b/media/gpu/avda_picture_buffer_manager.h
@@ -45,13 +45,14 @@ class MEDIA_GPU_EXPORT AVDAPictureBufferManager {
   // Must be called before anything else. If |surface_id| is |kNoSurfaceID|
   // then a new SurfaceTexture will be returned. Otherwise, the corresponding
   // SurfaceView will be returned.
+  //
+  // May be called multiple times to switch to a new |surface_id|. Picture
+  // buffers will be updated to use the new surface during the call to
+  // UseCodecBufferForPictureBuffer().
   gl::ScopedJavaSurface Initialize(int surface_id);
 
   void Destroy(const PictureBufferMap& buffers);
 
-  // Returns the GL texture target that the PictureBuffer textures use.
-  uint32_t GetTextureTarget() const;
-
   // Returns the size to use when requesting picture buffers.
   gfx::Size GetPictureBufferSize() const;
 
@@ -81,6 +82,14 @@ class MEDIA_GPU_EXPORT AVDAPictureBufferManager {
   // Whether the pictures buffers are overlayable.
   bool ArePicturesOverlayable();
 
+  // Are there any unrendered picture buffers oustanding?
+  bool HasUnrenderedPictures() const;
+
+  // Returns the GL texture target that the PictureBuffer textures use.
+  // Always use OES textures even though this will cause flickering in dev tools
+  // when inspecting a fullscreen video.  See http://crbug.com/592798
+  enum { kTextureTarget = GL_TEXTURE_EXTERNAL_OES };
+
  private:
   // Release any codec buffer that is associated with the given picture buffer
   // back to the codec.  It is okay if there is no such buffer.