[Linux Views] Refactor accelerator handler related code.

views/focus/accelerator_handler.h

 // Copyright (c) 2006-2008 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 VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
 #define VIEWS_FOCUS_ACCELERATOR_HANDLER_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 17 matching lines @@
 #if defined(OS_WIN)
   virtual bool Dispatch(const MSG& msg);
 #else
   virtual bool Dispatch(GdkEvent* event);
 #endif
 
  private:
 #if defined(OS_WIN)
   // The keys currently pressed and consumed by the FocusManager.
   std::set<WPARAM> pressed_keys_;
-#else  // OS_LINUX
-  // The set of hardware keycodes that are currently pressed.  We use this
-  // to keep track of whether or not a key is being pressed in isolation
-  // or not. We must use hardware keycodes because higher-level keycodes
-  // may change between press and release depending on what modifier keys
-  // are pressed in the interim.
-  std::set<int> pressed_hardware_keys_;
-  // The set of vkey codes that were consumed by the FocusManager.
-  std::set<int> consumed_vkeys_;
-  // True if only the menu key (Alt key) was pressed, and no other keys.
-  bool only_menu_pressed_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(AcceleratorHandler);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_FOCUS_ACCELERATOR_HANDLER_H_