Cancel prerenders from Omnibox if we navigate to a different URL than predicted

chrome/browser/prerender/prerender_manager.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_MANAGER_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_
 #pragma once
 
 #include <list>
 #include <string>
@@ skipping 103 matching lines @@
       SessionStorageNamespace* session_storage_namespace);
 
   // Destroy all prerenders for the given child route id pair and assign a final
   // status to them.
   virtual void DestroyPrerenderForRenderView(int process_id, int view_id,
                                              FinalStatus final_status);
 
   // Cancels all active prerenders.
   void CancelAllPrerenders();
 
+  // Cancels all active prerenders with the ORIGIN_OMNIBOX origin.
+  void CancelOmniboxPrerenders();
+
   // For a given WebContents that wants to navigate to the URL supplied,
   // determines whether a prerendered version of the URL can be used,
   // and substitutes the prerendered RVH into the WebContents. |opener_url| is
   // set to the window.opener url that the WebContents should have set and
   // will be empty if there is no opener set. Returns whether or not a
   // prerendered RVH could be used or not.
   bool MaybeUsePrerenderedPage(content::WebContents* web_contents,
                                const GURL& url,
                                const GURL& opener_url);
 
@@ skipping 76 matching lines @@
 
   PrerenderTracker* prerender_tracker() { return prerender_tracker_; }
 
   // Adds a condition. This is owned by the PrerenderManager.
   void AddCondition(const PrerenderCondition* condition);
 
   bool IsTopSite(const GURL& url);
 
   bool IsPendingEntry(const GURL& url) const;
 
+  // Returns true if |url| matches any URLs being prerendered.
+  // TODO(dominich): This should be a const method but FindEntry is not const.
+  // It should be.
+  bool IsPrerendering(const GURL& url);
+
  protected:
   void SetPrerenderContentsFactory(
       PrerenderContents::Factory* prerender_contents_factory);
 
   // Utility method that is called from the virtual Shutdown method on this
   // class but is called directly from the TestPrerenderManager in the unit
   // tests.
   void DoShutdown();
 
  private:
@@ skipping 200 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(PrerenderManager);
 };
 
 PrerenderManager* FindPrerenderManagerUsingRenderProcessId(
     int render_process_id);
 
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_MANAGER_H_