Revert 244407 "InstantExtended: remove dead code related to the ..."

trunk/src/chrome/browser/ui/search/instant_page.h

Index: trunk/src/chrome/browser/ui/search/instant_page.h
===================================================================
--- trunk/src/chrome/browser/ui/search/instant_page.h	(revision 244428)
+++ trunk/src/chrome/browser/ui/search/instant_page.h	(working copy)
@@ -52,6 +52,9 @@
         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();
   };
@@ -116,6 +119,17 @@
       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,