Cleanup: remove GTK stuff

ui/views/ime/input_method.h

 // Copyright (c) 2011 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 UI_VIEWS_IME_INPUT_METHOD_H_
 #define UI_VIEWS_IME_INPUT_METHOD_H_
 #pragma once
 
 #include <string>
 
@@ skipping 12 matching lines @@
 class InputMethodDelegate;
 }  // namespace internal
 
 class KeyEvent;
 class View;
 class Widget;
 
 // An interface implemented by an object that encapsulates a native input method
 // service provided by the underlying operation system.
 // Because on most systems, the system input method service is bound to
-// individual native window. On Windows, its HWND, on Linux/Gtk, its GdkWindow.
-// And in Views control system, only the top-level NativeWidget has a native
-// window that can get keyboard focus. So this API is designed to be bound to
-// the top-level NativeWidget.
+// individual native window. On Windows, its HWND, on Aura, its
+// ui::aura::Window. And in Views control system, only the top-level
+// NativeWidget has a native window that can get keyboard focus. So this API is
+// designed to be bound to the top-level NativeWidget.
 class VIEWS_EXPORT InputMethod {
  public:
   virtual ~InputMethod() {}
 
   // Sets the delegate used by this InputMethod instance. It should only be
   // called by the internal NativeWidget or testing code.
   virtual void set_delegate(internal::InputMethodDelegate* delegate) = 0;
 
   // Initialize the InputMethod object and attach it to the given |widget|.
   // The |widget| must already be initialized.
@@ skipping 60 matching lines @@
 
   // Returns true if the input method is a mock and not real.
   virtual bool IsMock() const = 0;
 
   // TODO(suzhe): Support mouse/touch event.
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_IME_INPUT_METHOD_H_