Cleanup: Remove unneeded chrome/common/pref_names.h includes.

chrome/browser/chrome_page_zoom.cc

 // Copyright (c) 2012 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/chrome_page_zoom.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/chrome_page_zoom_constants.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/zoom/zoom_controller.h"
-#include "chrome/common/pref_names.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/renderer_preferences.h"
 
 using base::UserMetricsAction;
 
 namespace chrome_page_zoom {
@@ skipping 86 matching lines @@
         zoom_controller->SetZoomLevel(zoom_level);
         content::RecordAction(UserMetricsAction("ZoomPlus"));
         return;
       }
     }
     content::RecordAction(UserMetricsAction("ZoomPlus_AtMaximum"));
   }
 }
 
 }  // namespace chrome_page_zoom