Add flow control between renderer and GPU processes, and, on Mac OS X,...

chrome/browser/renderer_host/render_widget_host.cc

 // Copyright (c) 2010 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 "chrome/browser/renderer_host/render_widget_host.h"
 
 #include "app/keyboard_codes.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 1038 matching lines @@
     TransportDIB::Handle transport_dib) {
   if (view_) {
     view_->AcceleratedSurfaceSetTransportDIB(window, width, height,
                                              transport_dib);
   }
 }
 
 void RenderWidgetHost::OnAcceleratedSurfaceBuffersSwapped(
     gfx::PluginWindowHandle window, uint64 surface_id) {
   if (view_) {
-    view_->AcceleratedSurfaceBuffersSwapped(window, surface_id);
+    // This code path could be updated to implement flow control for
+    // updating of accelerated plugins as well. However, if we add support
+    // for composited plugins then this is not necessary.
+    view_->AcceleratedSurfaceBuffersSwapped(window, surface_id,
+                                            0, 0, 0);
   }
 }
 #elif defined(OS_POSIX)
 
 void RenderWidgetHost::OnMsgCreatePluginContainer(gfx::PluginWindowHandle id) {
   // TODO(piman): view_ can only be NULL with delayed view creation in
   // extensions (see ExtensionHost::CreateRenderViewSoon). Figure out how to
   // support plugins in that case.
   if (view_) {
     view_->CreatePluginContainer(id);
@@ skipping 127 matching lines @@
     // of this key event.
     if (!processed && !is_hidden_ && !front_item.skip_in_browser) {
       UnhandledKeyboardEvent(front_item);
 
       // WARNING: This RenderWidgetHost can be deallocated at this point
       // (i.e.  in the case of Ctrl+W, where the call to
       // UnhandledKeyboardEvent destroys this RenderWidgetHost).
     }
   }
 }