Code refactor related to WeakPtrFactory in content/browser module

content/browser/renderer_host/gpu_message_filter.h

Index: content/browser/renderer_host/gpu_message_filter.h
diff --git a/content/browser/renderer_host/gpu_message_filter.h b/content/browser/renderer_host/gpu_message_filter.h
index 559415e70fee6674272b266bf85093e8c7af53f9..43caf0c4ede54387d63a5295a3fcd58c65986b5b 100644
--- a/content/browser/renderer_host/gpu_message_filter.h
+++ b/content/browser/renderer_host/gpu_message_filter.h
@@ -81,11 +81,11 @@ class GpuMessageFilter : public BrowserMessageFilter {
 
   scoped_refptr<RenderWidgetHelper> render_widget_helper_;
 
-  base::WeakPtrFactory<GpuMessageFilter> weak_ptr_factory_;
-
   typedef std::vector<linked_ptr<FrameSubscription> > FrameSubscriptionList;
   FrameSubscriptionList frame_subscription_list_;
 
+  base::WeakPtrFactory<GpuMessageFilter> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuMessageFilter);
 };