InstantExtended: Transient naventry for preview.

chrome/browser/instant/instant_loader.h

Index: chrome/browser/instant/instant_loader.h
diff --git a/chrome/browser/instant/instant_loader.h b/chrome/browser/instant/instant_loader.h
index 185d2ff53e9317c3b7838c66ac3adf826f2e5c61..56a7631c295a7121e3479197277c7d55c1ab2df3 100644
--- a/chrome/browser/instant/instant_loader.h
+++ b/chrome/browser/instant/instant_loader.h
@@ -28,6 +28,7 @@ struct Mode;
 }
 
 namespace content {
+class NavigationEntry;
 class WebContents;
 }
 
@@ -90,6 +91,10 @@ class InstantLoader : public InstantClient::Delegate,
   // InstantController::kLocalOmniboxPopupURL as the |instant_url_|.
   bool IsUsingLocalPreview() const;
 
+  const content::NavigationEntry* base_navigation_entry() const {
+    return base_navigation_entry_.get();
+  }
+
   // Calls through to methods of the same name on InstantClient.
   void Update(const string16& text,
               size_t selection_start,
@@ -142,6 +147,7 @@ class InstantLoader : public InstantClient::Delegate,
   // on the preview and it needs to be activated.
   scoped_ptr<WebContentsDelegateImpl> delegate_;
   scoped_ptr<content::WebContents> contents_;
+  scoped_ptr<const content::NavigationEntry> base_navigation_entry_;
 
   const std::string instant_url_;
   bool supports_instant_;