use accelerated compositing in fullscreen pepper

webkit/plugins/ppapi/ppapi_plugin_instance.cc

Index: webkit/plugins/ppapi/ppapi_plugin_instance.cc
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 5147b323fdadc56588774bd2cda0a0b56c86de55..0742e5050f43158be793ee098decca7b9311e200 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -402,7 +402,11 @@ unsigned PluginInstance::GetBackingTextureId() {
 }
 
 void PluginInstance::CommitBackingTexture() {
-  container_->commitBackingTexture();
+  if (fullscreen_container_) {
+    fullscreen_container_->Invalidate();
+  } else {
+    container_->commitBackingTexture();
+  }
 }
 
 PP_Var PluginInstance::GetWindowObject() {
@@ -936,6 +940,14 @@ bool PluginInstance::NavigateToURL(const char* url, const char* target) {
   return true;
 }
 
+PluginDelegate::PlatformContext3D* PluginInstance::CreateContext3D() {
+  if (fullscreen_container_) {
+    return fullscreen_container_->CreateContext3D();
+  } else {
+    return delegate_->CreateContext3D();
+  }
+}
+
 bool PluginInstance::PrintPDFOutput(PP_Resource print_output,
                                     WebKit::WebCanvas* canvas) {
   scoped_refptr<PPB_Buffer_Impl> buffer(