Implement {Start,Stop}CapturingKeyStrokes for Instant.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h

 // Copyright (c) 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_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 #define CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 30 matching lines @@
   virtual void SetForcedQuery() OVERRIDE;
   virtual bool IsSelectAll() const OVERRIDE;
   virtual bool DeleteAtEndPressed() OVERRIDE;
   virtual void GetSelectionBounds(string16::size_type* start,
                                   string16::size_type* end) const OVERRIDE;
   virtual void SelectAll(bool reversed) OVERRIDE;
   virtual void RevertAll() OVERRIDE;
   virtual void UpdatePopup() OVERRIDE;
   virtual void CloseOmniboxPopup() OVERRIDE;
   virtual void SetFocus() OVERRIDE;
+  virtual void ApplyCaretVisibility() OVERRIDE;
   virtual void OnTemporaryTextMaybeChanged(
       const string16& display_text,
       bool save_original_selection) OVERRIDE;
   virtual bool OnInlineAutocompleteTextMaybeChanged(
       const string16& display_text, size_t user_text_length) OVERRIDE;
   virtual void OnStartingIME() OVERRIDE;
   virtual void OnRevertTemporaryText() OVERRIDE;
   virtual void OnBeforePossibleChange() OVERRIDE;
   virtual bool OnAfterPossibleChange() OVERRIDE;
   virtual gfx::NativeView GetNativeView() const OVERRIDE;
@@ skipping 120 matching lines @@
   // Was the delete key pressed with an empty selection at the end of the edit?
   bool delete_at_end_pressed_;
 
   // The maximum/standard line height for the displayed text.
   CGFloat line_height_;
 
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewMac);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_OMNIBOX_OMNIBOX_VIEW_MAC_H_