Handle Esc key press event in Local NTP.

chrome/renderer/searchbox/searchbox.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_RENDERER_SEARCHBOX_SEARCHBOX_H_
 #define CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 111 matching lines @@
                 size_t selection_end);
   void OnSubmit(const string16& query);
   void OnCancel(const string16& query);
   void OnPopupResize(const gfx::Rect& bounds);
   void OnMarginChange(int margin, int width);
   void OnBarsHidden();
   void OnDetermineIfPageSupportsInstant();
   void OnAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
   void OnUpOrDownKeyPressed(int count);
+  void OnEscKeyPressed();
   void OnCancelSelection(const string16& query,
                          bool verbatim,
                          size_t selection_start,
                          size_t selection_end);
   void OnKeyCaptureChange(bool is_key_capture_enabled);
   void OnSetDisplayInstantResults(bool display_instant_results);
   void OnThemeChanged(const ThemeBackgroundInfo& theme_info);
   void OnThemeAreaHeightChanged(int height);
   void OnFontInformationReceived(const string16& omnibox_font,
                                  size_t omnibox_font_size);
@@ skipping 22 matching lines @@
   string16 omnibox_font_;
   size_t omnibox_font_size_;
   InstantRestrictedIDCache<InstantAutocompleteResult>
       autocomplete_results_cache_;
   InstantRestrictedIDCache<InstantMostVisitedItem> most_visited_items_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBox);
 };
 
 #endif  // CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_