Make Satisfy/Require callbacks pass Surface id and sequence by reference

content/renderer/child_frame_compositing_helper.cc

 // Copyright 2014 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/child_frame_compositing_helper.h"
 
 #include <utility>
 
 #include "cc/blink/web_layer_impl.h"
 #include "cc/layers/picture_image_layer.h"
@@ skipping 131 matching lines @@
   }
 
   blink::WebLayer* layer = new cc_blink::WebLayerImpl(crashed_layer);
   UpdateWebLayer(layer);
 }
 
 // static
 void ChildFrameCompositingHelper::SatisfyCallback(
     scoped_refptr<ThreadSafeSender> sender,
     int host_routing_id,
-    cc::SurfaceSequence sequence) {
+    const cc::SurfaceSequence& sequence) {
   // This may be called on either the main or impl thread.
   sender->Send(new FrameHostMsg_SatisfySequence(host_routing_id, sequence));
 }
 
 // static
 void ChildFrameCompositingHelper::SatisfyCallbackBrowserPlugin(
     scoped_refptr<ThreadSafeSender> sender,
     int host_routing_id,
     int browser_plugin_instance_id,
-    cc::SurfaceSequence sequence) {
+    const cc::SurfaceSequence& sequence) {
   sender->Send(new BrowserPluginHostMsg_SatisfySequence(
       host_routing_id, browser_plugin_instance_id, sequence));
 }
 
 // static
 void ChildFrameCompositingHelper::RequireCallback(
     scoped_refptr<ThreadSafeSender> sender,
     int host_routing_id,
-    cc::SurfaceId id,
-    cc::SurfaceSequence sequence) {
+    const cc::SurfaceId& id,
+    const cc::SurfaceSequence& sequence) {
   // This may be called on either the main or impl thread.
   sender->Send(new FrameHostMsg_RequireSequence(host_routing_id, id, sequence));
 }
 
 void ChildFrameCompositingHelper::RequireCallbackBrowserPlugin(
     scoped_refptr<ThreadSafeSender> sender,
     int host_routing_id,
     int browser_plugin_instance_id,
-    cc::SurfaceId id,
-    cc::SurfaceSequence sequence) {
+    const cc::SurfaceId& id,
+    const cc::SurfaceSequence& sequence) {
   // This may be called on either the main or impl thread.
   sender->Send(new BrowserPluginHostMsg_RequireSequence(
       host_routing_id, browser_plugin_instance_id, id, sequence));
 }
 
 void ChildFrameCompositingHelper::OnSetSurface(
     const cc::SurfaceId& surface_id,
     const gfx::Size& frame_size,
     float scale_factor,
     const cc::SurfaceSequence& sequence) {
@@ skipping 46 matching lines @@
       frame_size, scale_factor,
       static_cast<cc_blink::WebLayerImpl*>(web_layer_.get())->layer());
 }
 
 void ChildFrameCompositingHelper::UpdateVisibility(bool visible) {
   if (web_layer_)
     web_layer_->setDrawsContent(visible);
 }
 
 }  // namespace content