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

chrome/browser/prerender/prerender_manager.h

Index: chrome/browser/prerender/prerender_manager.h
diff --git a/chrome/browser/prerender/prerender_manager.h b/chrome/browser/prerender/prerender_manager.h
index 3a3ec35ff041dfde6e118b71c978e378c57c9ea6..54e22c3d1d9135bcd0174699379eefb8fcc1952a 100644
--- a/chrome/browser/prerender/prerender_manager.h
+++ b/chrome/browser/prerender/prerender_manager.h
@@ -121,6 +121,9 @@ class PrerenderManager : public base::SupportsWeakPtr<PrerenderManager>,
   // 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
@@ -217,6 +220,11 @@ class PrerenderManager : public base::SupportsWeakPtr<PrerenderManager>,
 
   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);