Added CommandBufferClient, CommandBufferStub and some IPC messages....

chrome/plugin/webplugin_delegate_stub.cc

Index: chrome/plugin/webplugin_delegate_stub.cc
===================================================================
--- chrome/plugin/webplugin_delegate_stub.cc	(revision 34152)
+++ chrome/plugin/webplugin_delegate_stub.cc	(working copy)
@@ -130,6 +130,8 @@
     IPC_MESSAGE_HANDLER(PluginMsg_InstallMissingPlugin, OnInstallMissingPlugin)
     IPC_MESSAGE_HANDLER(PluginMsg_HandleURLRequestReply,
                         OnHandleURLRequestReply)
+    IPC_MESSAGE_HANDLER(PluginMsg_CreateCommandBuffer,
+                        OnCreateCommandBuffer)
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
 
@@ -302,8 +304,9 @@
       );
 }
 
-void WebPluginDelegateStub::OnGetPluginScriptableObject(int* route_id,
-                                                        intptr_t* npobject_ptr) {
+void WebPluginDelegateStub::OnGetPluginScriptableObject(
+    int* route_id,
+    intptr_t* npobject_ptr) {
   NPObject* object = delegate_->GetPluginScriptableObject();
   if (!object) {
     *route_id = MSG_ROUTING_NONE;
@@ -357,6 +360,16 @@
   delegate_->InstallMissingPlugin();
 }
 
+void WebPluginDelegateStub::OnCreateCommandBuffer(int* route_id) {
+#if defined(ENABLE_GPU)
+  command_buffer_stub_.reset(new CommandBufferStub(
+      static_cast<PluginChannel*>(PluginChannelBase::GetCurrentChannel()),
+      delegate_->windowed_handle()));
+
+  *route_id = command_buffer_stub_->route_id();
+#endif
+}
+
 void WebPluginDelegateStub::CreateSharedBuffer(
     size_t size,
     base::SharedMemory* shared_buf,