Added GPU process "echo" IPC message.

content/renderer/render_widget_fullscreen_pepper.cc

 // 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.
 
 #include "content/renderer/render_widget_fullscreen_pepper.h"
 
 #include "base/message_loop.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/gpu/gpu_channel_host.h"
 #include "content/renderer/pepper_platform_context_3d_impl.h"
@@ skipping 209 matching lines @@
 
 RenderWidgetFullscreenPepper::RenderWidgetFullscreenPepper(
     RenderThreadBase* render_thread,
     webkit::ppapi::PluginInstance* plugin,
     const GURL& active_url)
     : RenderWidgetFullscreen(render_thread),
       active_url_(active_url),
       plugin_(plugin),
       context_(NULL),
       buffer_(0),
-      program_(0) {
+      program_(0),
+      method_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
 }
 
 RenderWidgetFullscreenPepper::~RenderWidgetFullscreenPepper() {
   if (context_)
     DestroyContext(context_, program_, buffer_);
 }
 
 void RenderWidgetFullscreenPepper::Invalidate() {
   InvalidateRect(gfx::Rect(size_.width(), size_.height()));
 }
@@ skipping 115 matching lines @@
       attribs,
       active_url_);
   if (!context_)
     return;
 
   if (!InitContext()) {
     DestroyContext(context_, program_, buffer_);
     context_ = NULL;
     return;
   }
-  context_->SetSwapBuffersCallback(
-      NewCallback(this,
-          &RenderWidgetFullscreenPepper::
-              OnSwapBuffersCompleteByRendererGLContext));
   context_->SetContextLostCallback(
       NewCallback(this, &RenderWidgetFullscreenPepper::OnLostContext));
 }
 
 namespace {
 
 const char kVertexShader[] =
     "attribute vec2 in_tex_coord;\n"
     "varying vec2 tex_coord;\n"
     "void main() {\n"
@@ skipping 90 matching lines @@
       webwidget_ && webwidget_->isAcceleratedCompositingActive();
   if (compositing != is_accelerated_compositing_active_)
     didActivateAcceleratedCompositing(compositing);
   return compositing;
 }
 
 void RenderWidgetFullscreenPepper::SwapBuffers() {
   DCHECK(context_);
   OnSwapBuffersPosted();
   context_->SwapBuffers();
+  context_->Echo(method_factory_.NewRunnableMethod(
+      &RenderWidgetFullscreenPepper::OnSwapBuffersCompleteByRendererGLContext));
 }
 
 void RenderWidgetFullscreenPepper::OnLostContext(
     RendererGLContext::ContextLostReason) {
   if (!context_)
     return;
   // Destroy the context later, in case we got called from InitContext for
   // example. We still need to reset context_ now so that a new context gets
   // created when the plugin recreates its own.
   MessageLoop::current()->PostTask(
       FROM_HERE,
       NewRunnableFunction(DestroyContext, context_, program_, buffer_));
   context_ = NULL;
   program_ = 0;
   buffer_ = 0;
   OnSwapBuffersAborted();
   CheckCompositing();
 }
 
 void RenderWidgetFullscreenPepper::OnSwapBuffersCompleteByRendererGLContext() {
   OnSwapBuffersComplete();
 }