Pass decoded picture size from VDA to client

content/renderer/pepper/pepper_video_decoder_host.cc

 // Copyright (c) 2014 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.
 
 #include "content/renderer/pepper/pepper_video_decoder_host.h"
 
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/public/renderer/render_thread.h"
@@ skipping 295 matching lines @@
     uint32 requested_num_of_buffers,
     const gfx::Size& dimensions,
     uint32 texture_target) {
   RequestTextures(requested_num_of_buffers,
                   dimensions,
                   texture_target,
                   std::vector<gpu::Mailbox>());
 }
 
 void PepperVideoDecoderHost::PictureReady(const media::Picture& picture) {
+  // So far picture.visible_rect is not used. If used, visible_rect should
+  // be validated since it comes from GPU process and may not be trustworthy.
   host()->SendUnsolicitedReply(
       pp_resource(),
       PpapiPluginMsg_VideoDecoder_PictureReady(picture.bitstream_buffer_id(),
                                                picture.picture_buffer_id()));
 }
 
 void PepperVideoDecoderHost::DismissPictureBuffer(int32 picture_buffer_id) {
   host()->SendUnsolicitedReply(
       pp_resource(),
       PpapiPluginMsg_VideoDecoder_DismissPicture(picture_buffer_id));
@@ skipping 72 matching lines @@
   host()->SendUnsolicitedReply(
       pp_resource(),
       PpapiPluginMsg_VideoDecoder_RequestTextures(
           requested_num_of_buffers,
           PP_MakeSize(dimensions.width(), dimensions.height()),
           texture_target,
           mailboxes));
 }
 
 }  // namespace content