[Linux Views] Refactor accelerator handler related code.

views/focus/accelerator_handler.h

Index: views/focus/accelerator_handler.h
diff --git a/views/focus/accelerator_handler.h b/views/focus/accelerator_handler.h
index 6140d36442f1fa8de63539d4c1d20c508644497c..3726d967a88fc4d6caf55e34a8071b2b02cc3c65 100644
--- a/views/focus/accelerator_handler.h
+++ b/views/focus/accelerator_handler.h
@@ -35,17 +35,6 @@ class AcceleratorHandler : public MessageLoopForUI::Dispatcher {
 #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);