InstantExtended: remove dead code related to the non-cacheable NTP.

chrome/browser/ui/search/instant_page.h

Index: chrome/browser/ui/search/instant_page.h
diff --git a/chrome/browser/ui/search/instant_page.h b/chrome/browser/ui/search/instant_page.h
index 8967d9116ac614572b7b674aee092d906a99a1a4..a054cb48386d2f94ba6e1ccb55de2fa08edc3d6b 100644
--- a/chrome/browser/ui/search/instant_page.h
+++ b/chrome/browser/ui/search/instant_page.h
@@ -52,9 +52,6 @@ class InstantPage : public content::WebContentsObserver,
         const content::WebContents* contents,
         const GURL& url) = 0;
 
-    // Called when the page fails to load for whatever reason.
-    virtual void InstantPageLoadFailed(content::WebContents* contents) = 0;
-
    protected:
     virtual ~Delegate();
   };
@@ -119,17 +116,6 @@ class InstantPage : public content::WebContentsObserver,
       const GURL& url,
       content::PageTransition transition_type,
       content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) OVERRIDE;
-  virtual void DidFailProvisionalLoad(
-      int64 frame_id,
-      const base::string16& frame_unique_name,
-      bool is_main_frame,
-      const GURL& validated_url,
-      int error_code,
-      const base::string16& error_description,
-      content::RenderViewHost* render_view_host) OVERRIDE;
 
   // Overridden from SearchModelObserver:
   virtual void ModelChanged(const SearchModel::State& old_state,