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

chrome/browser/instant/instant_controller.h

Index: chrome/browser/instant/instant_controller.h
diff --git a/chrome/browser/instant/instant_controller.h b/chrome/browser/instant/instant_controller.h
index 5661ba1cac97046f4c2e227e8beee17abb1e9a1d..2a55a38eaea3fee08941a2acd8e37e654ea66719 100644
--- a/chrome/browser/instant/instant_controller.h
+++ b/chrome/browser/instant/instant_controller.h
@@ -77,11 +77,12 @@ class InstantController {
   // The preview WebContents. May be NULL. InstantController retains ownership.
   content::WebContents* GetPreviewContents() const;
 
-  // Returns true if the Instant preview can be committed now.
-  bool IsCurrent() const;
+  // Returns true if the Instant preview is in search mode and can be committed.
+  bool IsCurrentSearch() const;
 
-  // If the preview is showing search results, commits the preview, calling
-  // CommitInstant() on the browser, and returns true. Else, returns false.
+  // If the preview is showing search results, or navigating, commits the
+  // preview, calling CommitInstant() on the browser, and returns true. Else,
+  // returns false.
   bool CommitIfCurrent(InstantCommitType type);
 
   // The omnibox has lost focus. Commit or discard the preview accordingly.
@@ -145,6 +146,9 @@ class InstantController {
   // Invoked by the InstantLoader when its RenderView crashes.
   void InstantLoaderRenderViewGone();
 
+  // Invoked by InstantLoader when the instant page is about to navigate.
+  void InstantLoaderAboutToNavigateMainFrame(const GURL& url);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(InstantTest, OmniboxFocusLoadsInstant);
   FRIEND_TEST_ALL_PREFIXES(InstantTest, NonInstantSearchProvider);