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

content/renderer/child_frame_compositing_helper.h

 // 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.
 
 #ifndef CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_
 #define CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 75 matching lines @@
 
   BrowserPluginManager* GetBrowserPluginManager();
   blink::WebPluginContainer* GetContainer();
   int GetInstanceID();
 
   void CheckSizeAndAdjustLayerProperties(const gfx::Size& new_size,
                                          float device_scale_factor,
                                          cc::Layer* layer);
   static void SatisfyCallback(scoped_refptr<ThreadSafeSender> sender,
                               int host_routing_id,
-                              cc::SurfaceSequence sequence);
+                              const cc::SurfaceSequence& sequence);
   static void SatisfyCallbackBrowserPlugin(
       scoped_refptr<ThreadSafeSender> sender,
       int host_routing_id,
       int browser_plugin_instance_id,
-      cc::SurfaceSequence sequence);
+      const cc::SurfaceSequence& sequence);
   static void RequireCallback(scoped_refptr<ThreadSafeSender> sender,
                               int host_routing_id,
-                              cc::SurfaceId id,
-                              cc::SurfaceSequence sequence);
+                              const cc::SurfaceId& id,
+                              const cc::SurfaceSequence& sequence);
   static void 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);
   void UpdateWebLayer(blink::WebLayer* layer);
 
   int host_routing_id_;
 
   gfx::Size buffer_size_;
 
   // The lifetime of this weak pointer should be greater than the lifetime of
   // other member objects, as they may access this pointer during their
   // destruction.
   base::WeakPtr<BrowserPlugin> browser_plugin_;
   RenderFrameProxy* render_frame_proxy_;
 
   std::unique_ptr<blink::WebLayer> web_layer_;
   cc::SurfaceId surface_id_;
   blink::WebFrame* frame_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildFrameCompositingHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_