Cancel prerenders for pages that call window.print()

chrome/browser/prerender/prerender_observer.h

 // 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.
 
 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_OBSERVER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_OBSERVER_H_
-#pragma once
 
-#include <list>
-#include <vector>
+#include "content/browser/tab_contents/tab_contents_observer.h"
 
-#include "base/memory/scoped_ptr.h"
 #include "base/time.h"
-#include "content/browser/tab_contents/tab_contents_observer.h"
-#include "googleurl/src/gurl.h"
 
-class PrerenderContents;
-class Profile;
 class TabContents;
+class GURL;
 
 namespace prerender {
 
+class PrerenderContents;
 class PrerenderManager;
 
 // PrerenderObserver is responsible for recording perceived pageload times
 // to compare PLT's with prerendering enabled and disabled.
 class PrerenderObserver : public TabContentsObserver {
  public:
   explicit PrerenderObserver(TabContents* tab_contents);
   virtual ~PrerenderObserver();
 
   // TabContentsObserver implementation.
@@ skipping 21 matching lines @@
   // System time at which the current load was started for the purpose of
   // the perceived page load time (PPLT).
   base::TimeTicks pplt_load_start_;
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderObserver);
 };
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_OBSERVER_H_