Fix Android black frames from MSE config changes.

media/video/picture.h

Index: media/video/picture.h
diff --git a/media/video/picture.h b/media/video/picture.h
index 5ec3c55d9c8d4bf61fe1abcf5054bfd42b03db0f..65b2e781e0efa293209df9998ef08b76461daf7e 100644
--- a/media/video/picture.h
+++ b/media/video/picture.h
@@ -35,6 +35,7 @@ class MEDIA_EXPORT PictureBuffer {
   gfx::Size size() const {
     return size_;
   }
+  void set_size(gfx::Size size) { size_ = size; }
 
   // Returns the id of the texture.
   // NOTE: The texture id in the renderer process corresponds to a different
@@ -62,7 +63,8 @@ class MEDIA_EXPORT Picture {
   Picture(int32_t picture_buffer_id,
           int32_t bitstream_buffer_id,
           const gfx::Rect& visible_rect,
-          bool allow_overlay);
+          bool allow_overlay,
+          bool size_changed);

[liberato (no reviews please), 2016/03/05 08:51:00]

since this flag has a very specific, uncommon use, maybe remove it from the
constructor and add a setter for it.  that'll also prevent most of the files in
this CL from changing.

[chcunningham, 2016/03/08 03:19:36]

I think I prefer your int flags suggestion. 

 
   // Returns the id of the picture buffer where this picture is contained.
   int32_t picture_buffer_id() const { return picture_buffer_id_; }
@@ -81,11 +83,18 @@ class MEDIA_EXPORT Picture {
 
   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_; };
+
  private:
   int32_t picture_buffer_id_;
   int32_t bitstream_buffer_id_;
   gfx::Rect visible_rect_;
   bool allow_overlay_;
+  bool size_changed_;
 };
 
 }  // namespace media