Commit instant loader when the instant page navigates away from instant URL.

chrome/browser/instant/instant_client.h

Index: chrome/browser/instant/instant_client.h
diff --git a/chrome/browser/instant/instant_client.h b/chrome/browser/instant/instant_client.h
index 95ab9096d75d298fdc9736ea61838e03d824cad0..e18c1ef99633fbe2fe661f2b516f9f9ed7d0f135 100644
--- a/chrome/browser/instant/instant_client.h
+++ b/chrome/browser/instant/instant_client.h
@@ -58,6 +58,9 @@ class InstantClient : public content::WebContentsObserver {
     // strokes.
     virtual void StopCapturingKeyStrokes() = 0;
 
+    // Called when the page is about to navigate.
+    virtual void InstantClientAboutToNavigate(const GURL& url) = 0;
+
    protected:
     virtual ~Delegate();
   };
@@ -123,6 +126,13 @@ class InstantClient : public content::WebContentsObserver {
       bool is_main_frame,
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void DidCommitProvisionalLoadForFrame(
+      int64 frame_id,
+      bool is_main_frame,
+      const GURL& url,
+      content::PageTransition transition_type,
+      content::RenderViewHost* render_view_host) OVERRIDE;
+  virtual void AboutToOpenURL(const GURL& url) OVERRIDE;
 
   void SetSuggestions(int page_id,
                       const std::vector<InstantSuggestion>& suggestions);