Remove some unnecessary includes of view_messages.h.

chrome/browser/prerender/prerender_tab_helper.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_tab_helper.h"
 
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/browser/tab_contents/tab_contents.h"
-#include "content/common/view_messages.h"
 
 namespace prerender {
 
 namespace {
 
 const int kMinHoverThresholdsMs[] = {
   250
 };
 
 // Overview of hover-related histograms:
@@ skipping 276 matching lines @@
 
   current_hover_url_ = GURL();
 }
 
 bool PrerenderTabHelper::IsTopSite(const GURL& url) {
   PrerenderManager* pm = MaybeGetPrerenderManager();
   return (pm && pm->IsTopSite(url));
 }
 
 }  // namespace prerender