Handle Esc key press event in Local NTP.

chrome/browser/ui/search/instant_controller.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_UI_SEARCH_INSTANT_CONTROLLER_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_CONTROLLER_H_
 
 #include <list>
 #include <string>
 #include <utility>
@@ skipping 360 matching lines @@
       const std::vector<InstantMostVisitedItemIDPair>& items);
 
   // If possible, tries to mutate |suggestion| to a valid suggestion. Returns
   // true if successful. (Note that |suggestion| may be modified even if this
   // returns false.)
   bool FixSuggestion(InstantSuggestion* suggestion) const;
 
   // Returns true if the local page is being used.
   bool UsingLocalPage() const;
 
+  // Sends the Escape key press event to the InstantPage.
+  void OnEscKeyPressed() const;
+
   BrowserInstantController* const browser_;
 
   // Whether the extended API and regular API are enabled. If both are false,
   // Instant is effectively disabled.
   const bool extended_enabled_;
   bool instant_enabled_;
 
   // If true, the Instant URL is set to kChromeSearchLocalNtpUrl.
   bool use_local_page_only_;
 
@@ skipping 80 matching lines @@
   // Used for Top Sites async retrieval.
   base::WeakPtrFactory<InstantController> weak_ptr_factory_;
 
   // Used to get notifications about Most Visted changes.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantController);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_CONTROLLER_H_