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 b9f9fa9eba26cf9f6c9d09963cd0137fdaf89e74..e9204813556948739ec0c23a5f531337646c603b 100644
--- a/chrome/browser/instant/instant_loader.h
+++ b/chrome/browser/instant/instant_loader.h
@@ -20,6 +20,7 @@ class Profile;
 
 namespace content {
 struct OpenURLParams;
+class NavigationEntry;
 class WebContents;
 }
 
@@ -85,6 +86,11 @@ class InstantLoader : public content::NotificationObserver,
   // not NULL.
   scoped_ptr<content::WebContents> ReleaseContents() WARN_UNUSED_RESULT;
 
+  // Returns the initial navigation entry for the most recently loaded URL.
+  const content::NavigationEntry* base_navigation_entry() {
+    return base_navigation_entry_.get();
+  }
+
  private:
   // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
@@ -122,6 +128,9 @@ class InstantLoader : public content::NotificationObserver,
   // Called when |stale_page_timer_| fires.
   base::Closure on_stale_callback_;
 
+  // The initial navigation entry for the URL we loaded.
+  scoped_ptr<const content::NavigationEntry> base_navigation_entry_;
+
   // Used to mark when the page is stale.
   base::Timer stale_page_timer_;