Handle Esc key press event in Local NTP.

chrome/browser/ui/search/instant_page.h

 // Copyright 2013 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_PAGE_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 143 matching lines @@
   void DetermineIfPageSupportsInstant();
 
   // Tells the page about the available autocomplete results.
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
 
   // Tells the page that the user pressed Up or Down in the omnibox. |count| is
   // a repeat count, negative for moving up, positive for moving down.
   void UpOrDownKeyPressed(int count);
 
+  // Tells the page that the user pressed Esc key in the omnibox.
+  void EscKeyPressed();
+
   // Tells the page that the user pressed Esc in the omnibox after having
   // arrowed down in the suggestions. The page should reset the selection to
   // the first suggestion. Arguments are the same as those for Update().
   void CancelSelection(const string16& user_text,
                        size_t selection_start,
                        size_t selection_end,
                        bool verbatim);
 
   // Tells the page about the current theme background.
   void SendThemeBackgroundInfo(const ThemeBackgroundInfo& theme_info);
@@ skipping 73 matching lines @@
   void OnUndoAllMostVisitedDeletions();
 
   Delegate* const delegate_;
   const std::string instant_url_;
   bool supports_instant_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantPage);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_PAGE_H_