Implement {Start,Stop}CapturingKeyStrokes for Instant.

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 15 matching lines @@
   virtual ~SearchBox();
 
   // Sends ViewHostMsg_SetSuggestions to the browser.
   void SetSuggestions(const std::vector<InstantSuggestion>& suggestions);
 
   // Sends ViewHostMsg_ShowInstantPreview to the browser.
   void ShowInstantPreview(InstantShownReason reason,
                           int height,
                           InstantSizeUnits units);
 
+  // Sends ViewHostMsg_StartCapturingKeyStrokes to the browser.
+  void StartCapturingKeyStrokes();
+
+  // Sends ViewHostMsg_StopCapturingKeyStrokes to the browser.
+  void StopCapturingKeyStrokes();
+
   const string16& query() const { return query_; }
   bool verbatim() const { return verbatim_; }
   size_t selection_start() const { return selection_start_; }
   size_t selection_end() const { return selection_end_; }
   int results_base() const { return results_base_; }
   const chrome::search::Mode& mode() const { return mode_; }
 
   gfx::Rect GetRect();
   const std::vector<InstantAutocompleteResult>& GetAutocompleteResults();
   // Searchbox retains ownership of this object.
@@ skipping 34 matching lines @@
   size_t last_results_base_;
   std::vector<InstantAutocompleteResult> last_autocomplete_results_;
   chrome::search::Mode mode_;
   ThemeBackgroundInfo theme_info_;
   int theme_area_height_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchBox);
 };
 
 #endif  // CHROME_RENDERER_SEARCHBOX_SEARCHBOX_H_