Fix Android black frames from MSE config changes.

media/video/picture.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_VIDEO_PICTURE_H_
 #define MEDIA_VIDEO_PICTURE_H_
 
 #include <stdint.h>
 
 #include "gpu/command_buffer/common/mailbox.h"
@@ skipping 17 matching lines @@
                 uint32_t texture_id,
                 const gpu::Mailbox& texture_mailbox);
 
   // Returns the client-specified id of the buffer.
   int32_t id() const { return id_; }
 
   // Returns the size of the buffer.
   gfx::Size size() const {
     return size_;
   }
+  void set_size(const gfx::Size& size) { size_ = size; }
 
   // Returns the id of the texture.
   // NOTE: The texture id in the renderer process corresponds to a different
   // texture id in the GPU process.
   uint32_t texture_id() const { return texture_id_; }
 
   uint32_t internal_texture_id() const { return internal_texture_id_; }
 
   const gpu::Mailbox& texture_mailbox() const {
     return texture_mailbox_;
   }
 
  private:
   int32_t id_;
   gfx::Size size_;
   uint32_t texture_id_;
   uint32_t internal_texture_id_;
   gpu::Mailbox texture_mailbox_;
 };
 
 // A decoded picture frame.
 // This is the media-namespace equivalent of PP_Picture_Dev.
 class MEDIA_EXPORT Picture {
  public:
+  // Defaults |size_changed_| to false. Size changed is currently only used
+  // by AVDA and is set via set_size_changd().
   Picture(int32_t picture_buffer_id,
           int32_t bitstream_buffer_id,
           const gfx::Rect& visible_rect,
           bool allow_overlay);
 
   // Returns the id of the picture buffer where this picture is contained.
   int32_t picture_buffer_id() const { return picture_buffer_id_; }
 
   // Returns the id of the bitstream buffer from which this frame was decoded.
   int32_t bitstream_buffer_id() const { return bitstream_buffer_id_; }
 
   void set_bitstream_buffer_id(int32_t bitstream_buffer_id) {
     bitstream_buffer_id_ = bitstream_buffer_id;
   }
 
   // Returns the visible rectangle of the picture. Its size may be smaller
   // than the size of the PictureBuffer, as it is the only visible part of the
   // Picture contained in the PictureBuffer.
   gfx::Rect visible_rect() const { return visible_rect_; }
 
   bool allow_overlay() const { return allow_overlay_; }
 
+  // Returns true when the VDA has adjusted the resolution of this Picture
+  // without requesting new PictureBuffers. GpuVideoDecoder should read this
+  // as a signal to update the size of the corresponding PicutreBuffer using
+  // visible_rect() upon receiving this Picture from a VDA.
+  bool size_changed() const { return size_changed_; };
+
+  void set_size_changed(bool size_changed) { size_changed_ = size_changed; }
+
  private:
   int32_t picture_buffer_id_;
   int32_t bitstream_buffer_id_;
   gfx::Rect visible_rect_;
   bool allow_overlay_;
+  bool size_changed_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_PICTURE_H_