Remove some unnecessary includes of view_messages.h.

chrome/browser/prerender/prerender_render_view_host_observer.cc

 // Copyright (c) 2011 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 "chrome/browser/prerender/prerender_render_view_host_observer.h"
 
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/common/icon_messages.h"
 #include "chrome/common/render_messages.h"
-#include "content/common/view_messages.h"
-#include "ipc/ipc_message_macros.h"
 
 namespace prerender {
 
 PrerenderRenderViewHostObserver::PrerenderRenderViewHostObserver(
     PrerenderContents* prerender_contents,
     RenderViewHost* render_view_host)
     : RenderViewHostObserver(render_view_host),
       prerender_contents_(prerender_contents) {
 }
 
@@ skipping 41 matching lines @@
 
 void PrerenderRenderViewHostObserver::OnMaybeCancelPrerenderForHTML5Media() {
   prerender_contents_->Destroy(FINAL_STATUS_HTML5_MEDIA);
 }
 
 void PrerenderRenderViewHostObserver::OnCancelPrerenderForPrinting() {
   prerender_contents_->Destroy(FINAL_STATUS_WINDOW_PRINT);
 }
 
 }