Remove ui::KeyEvent::platform_keycode_

ui/events/ozone/layout/keyboard_layout_engine.h

 // Copyright 2014 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_OZONE_PUBLIC_KEYBOARD_LAYOUT_ENGINE_H_
 #define UI_OZONE_PUBLIC_KEYBOARD_LAYOUT_ENGINE_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 43 matching lines @@
   // Returns true if it can determine the DOM meaning (i.e. ui::DomKey and
   // character) and the corresponding (non-located) KeyboardCode from the given
   // physical state (ui::DomCode and ui::EventFlags), OR if it can determine
   // that there is no meaning in the current layout (e.g. the key is unbound).
   // In the latter case, the function sets *dom_key to UNIDENTIFIED, *character
   // to 0, and *key_code to VKEY_UNKNOWN.
   //
   // Returns false if it cannot determine the meaning (and cannot determine
   // that there is none); in this case it does not set any of the output
   // parameters.
-  //
-  // TODO(kpschoedel): remove the platform_keycode output. crbug.com/442757
   virtual bool Lookup(DomCode dom_code,
                       int event_flags,
                       DomKey* dom_key,
-                      KeyboardCode* key_code,
-                      uint32* platform_keycode) const = 0;
+                      KeyboardCode* key_code) const = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PUBLIC_KEYBOARD_LAYOUT_ENGINE_H_