Clean up render_frame_impl.cc removing unnecessary static.

content/renderer/render_frame_impl.h

 // Copyright 2013 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_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 110 matching lines @@
                           int proxy_routing_id);
 
   // Returns the RenderFrameImpl for the given routing ID.
   static RenderFrameImpl* FromRoutingID(int routing_id);
 
   // Just like RenderFrame::FromWebFrame but returns the implementation.
   static RenderFrameImpl* FromWebFrame(blink::WebFrame* web_frame);
 
   // Used by content_layouttest_support to hook into the creation of
   // RenderFrameImpls.
+  using CreateRenderFrameImplFunction = RenderFrameImpl* (*)(RenderViewImpl*,
+                                                             int32);
   static void InstallCreateHook(
-      RenderFrameImpl* (*create_render_frame_impl)(RenderViewImpl*, int32));
+      CreateRenderFrameImplFunction create_render_frame_impl);
 
   virtual ~RenderFrameImpl();
 
   bool is_swapped_out() const {
     return is_swapped_out_;
   }
 
   // TODO(nasko): This can be removed once we don't have a swapped out state on
   // RenderFrames. See https://crbug.com/357747.
   void set_render_frame_proxy(RenderFrameProxy* proxy) {
@@ skipping 672 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_