Adding local html page used in Instant Extended mode when instant is disabled or unavailable.

chrome/browser/instant/instant_loader.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 68 matching lines @@
   // Returns info about the last navigation by the Instant page. If the page
   // hasn't navigated since the last Update(), the URL is empty.
   const history::HistoryAddPageArgs& last_navigation() const {
     return last_navigation_;
   }
 
   // Called by the history tab helper with information that it would have added
   // to the history service had this WebContents not been used for Instant.
   void DidNavigate(const history::HistoryAddPageArgs& add_page_args);
 
+  // Returns true if the loader is loading InstantLoader::kLocalOmniboxPopupURL.

[samarth, 2012/12/13 23:47:44]

nit: s/InstantLoader/InstantController/

[Shishir, 2012/12/14 00:03:15]

Done.

+  bool IsUsingLocalPreview() const;
+
   // Calls through to methods of the same name on InstantClient.
   void Update(const string16& text,
               size_t selection_start,
               size_t selection_end,
               bool verbatim);
   void Submit(const string16& text);
   void Cancel(const string16& text);
   void SetOmniboxBounds(const gfx::Rect& bounds);
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
@@ skipping 42 matching lines @@
   bool is_pointer_down_from_activate_;
   history::HistoryAddPageArgs last_navigation_;
 
   // Used to get notifications about renderers coming and going.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantLoader);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_