Fix Android black frames from MSE config changes.

content/common/gpu/client/gpu_video_decode_accelerator_host.cc

Index: content/common/gpu/client/gpu_video_decode_accelerator_host.cc
diff --git a/content/common/gpu/client/gpu_video_decode_accelerator_host.cc b/content/common/gpu/client/gpu_video_decode_accelerator_host.cc
index 1f5ceddb550075385e8e84417dcf60b533d59ed0..0add8df0dd890eeb68eada35135ea828a1885151 100644
--- a/content/common/gpu/client/gpu_video_decode_accelerator_host.cc
+++ b/content/common/gpu/client/gpu_video_decode_accelerator_host.cc
@@ -244,12 +244,13 @@ void GpuVideoDecodeAcceleratorHost::OnPictureReady(
     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]

another option is to start sending 'int32_t flags'.  Picture would hold the
int32_t, and accessors (e.g., allow_overlay()) would check the right bit
instead.

it's okay like this too.

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

I like this idea. This will involve changing a lot of files so let me see if
John signs off on the high level approach first.. 

[chcunningham, 2016/03/08 22:19:12]

Decided not to make it int32. I started to feel bad for callers of allow_overlay
having to now call flags and bitmask. Then I stumbled upon this in WebRTC call
thats not even in this CL yet and decided I'd reached a breaking point

https://code.google.com/p/chromium/codesearch#chromium/src/content/renderer/m...

Basically, I don't want bring down the visibility of allow_overlay() just
because size_changed() is a little awkward. 

I've done your other proposal: make size_changed be just a setter and leave the
constructor as is (with size_changed defaulting to false). 

   DCHECK(CalledOnValidThread());
   if (!client_)
     return;
   media::Picture picture(picture_buffer_id, bitstream_buffer_id, visible_rect,
-                         allow_overlay);
+                         allow_overlay, size_changed);
   client_->PictureReady(picture);
 }