Use inner HWND for accelerated rendering on windows

chrome/browser/gpu_process_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/gpu_process_host.h"
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/thread.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 184 matching lines @@
   IPC_BEGIN_MESSAGE_MAP(GpuProcessHost, message)
     IPC_MESSAGE_HANDLER(GpuHostMsg_ChannelEstablished, OnChannelEstablished)
     IPC_MESSAGE_HANDLER(GpuHostMsg_SynchronizeReply, OnSynchronizeReply)
 #if defined(OS_LINUX)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_GetViewXID, OnGetViewXID)
 #elif defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceSetIOSurface,
                         OnAcceleratedSurfaceSetIOSurface)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
                         OnAcceleratedSurfaceBuffersSwapped)
+#elif defined(OS_WIN)
+    IPC_MESSAGE_HANDLER_DELAY_REPLY(GpuHostMsg_CreateCompositorHostWindow,
+                                    OnCreateCompositorHostWindow)
 #endif
     // If the IO thread does not handle the message then automatically route it
     // to the UI thread. The UI thread will report an error if it does not
     // handle it.
     IPC_MESSAGE_UNHANDLED(RouteOnUIThread(message))
   IPC_END_MESSAGE_MAP()
 }
 
 void GpuProcessHost::OnChannelEstablished(
     const IPC::ChannelHandle& channel_handle,
@@ skipping 83 matching lines @@
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       new SetIOSurfaceDispatcher(params));
 }
 
 namespace {
 
 class BuffersSwappedDispatcher : public Task {
  public:
   BuffersSwappedDispatcher(
-      int32 renderer_id,
-      int32 render_view_id,
+      int renderer_id,
+      int render_view_id,
       gfx::PluginWindowHandle window,
       uint64 surface_id)
       : renderer_id_(renderer_id),
         render_view_id_(render_view_id),
         window_(window),
         surface_id_(surface_id) {
   }
 
   void Run() {
     RenderViewHost* host = RenderViewHost::FromID(renderer_id_,
                                                   render_view_id_);
     if (!host)
       return;
     RenderWidgetHostView* view = host->view();
     if (!view)
       return;
     view->AcceleratedSurfaceBuffersSwapped(window_, surface_id_);
   }
 
  private:
-  int32 renderer_id_;
-  int32 render_view_id_;
+  int renderer_id_;
+  int render_view_id_;
   gfx::PluginWindowHandle window_;
   uint64 surface_id_;
 
   DISALLOW_COPY_AND_ASSIGN(BuffersSwappedDispatcher);
 };
 
 }  // namespace
 
 void GpuProcessHost::OnAcceleratedSurfaceBuffersSwapped(
-    int32 renderer_id,
-    int32 render_view_id,
+    int renderer_id,
+    int render_view_id,
     gfx::PluginWindowHandle window,
     uint64 surface_id) {
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       new BuffersSwappedDispatcher(
           renderer_id, render_view_id, window, surface_id));
 }
+
+#elif defined(OS_WIN)
+
+namespace {
+
+void SendDelayedReply(IPC::Message* reply_msg) {
+  GpuProcessHost::Get()->Send(reply_msg);
+}
+
+void CreateCompositorHostWindowDispatcher(
+    int renderer_id,
+    int render_view_id,
+    IPC::Message* reply_msg) {
+  RenderViewHost* host = RenderViewHost::FromID(renderer_id,
+                                                render_view_id);
+  if (!host) {
+    return;
+  }
+
+  RenderWidgetHostView* view = host->view();
+  gfx::PluginWindowHandle id = view->CreateCompositorHostWindow();
+
+
+  GpuHostMsg_CreateCompositorHostWindow::WriteReplyParams(reply_msg, id);
+  BrowserThread::PostTask(
+    BrowserThread::IO, FROM_HERE,
+    NewRunnableFunction(&SendDelayedReply, reply_msg));
+}
+
+}  // namespace
+
+void GpuProcessHost::OnCreateCompositorHostWindow(
+    int renderer_id,
+    int render_view_id,
+    IPC::Message* reply_message) {
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      NewRunnableFunction(&CreateCompositorHostWindowDispatcher,
+          renderer_id, render_view_id, reply_message));
+}
+
 #endif
 
 void GpuProcessHost::SendEstablishChannelReply(
     const IPC::ChannelHandle& channel,
     const GPUInfo& gpu_info,
     ResourceMessageFilter* filter) {
   ViewMsg_GpuChannelEstablished* message =
       new ViewMsg_GpuChannelEstablished(channel, gpu_info);
   // If the renderer process is performing synchronous initialization,
   // it needs to handle this message before receiving the reply for
@@ skipping 17 matching lines @@
 
 bool GpuProcessHost::CanShutdown() {
   return true;
 }
 
 void GpuProcessHost::OnProcessCrashed() {
   // TODO(alokp): Update gpu process crash rate.
   BrowserChildProcessHost::OnProcessCrashed();
 }