Remove PlatformEvent it is no longer used.

third_party/WebKit/Source/core/events/UIEventWithKeyState.h

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef UIEventWithKeyState_h
 #define UIEventWithKeyState_h
 
 #include "core/CoreExport.h"
 #include "core/events/EventModifierInit.h"
 #include "core/events/UIEvent.h"
-#include "platform/PlatformEvent.h"
 #include "public/platform/WebInputEvent.h"
 
 namespace blink {
 
 class CORE_EXPORT UIEventWithKeyState : public UIEvent {
  public:
-  bool ctrlKey() const { return m_modifiers & PlatformEvent::CtrlKey; }
-  bool shiftKey() const { return m_modifiers & PlatformEvent::ShiftKey; }
-  bool altKey() const { return m_modifiers & PlatformEvent::AltKey; }
-  bool metaKey() const { return m_modifiers & PlatformEvent::MetaKey; }
+  bool ctrlKey() const { return m_modifiers & WebInputEvent::ControlKey; }
+  bool shiftKey() const { return m_modifiers & WebInputEvent::ShiftKey; }
+  bool altKey() const { return m_modifiers & WebInputEvent::AltKey; }
+  bool metaKey() const { return m_modifiers & WebInputEvent::MetaKey; }
 
   // We ignore the new tab modifiers (ctrl or meta, depending on OS) set by
   // JavaScript when processing events.  However, scripts running in isolated
   // worlds (aka content scripts) are not subject to this restriction. Since it
   // is possible that an event created by a content script is caught and
   // recreated by the web page's script, we resort to a global flag.
   static bool newTabModifierSetFromIsolatedWorld() {
     return s_newTabModifierSetFromIsolatedWorld;
   }
   static void clearNewTabModifierSetFromIsolatedWorld() {
     s_newTabModifierSetFromIsolatedWorld = false;
   }
   static void didCreateEventInIsolatedWorld(bool ctrlKey,
                                             bool shiftKey,
                                             bool altKey,
                                             bool metaKey);
 
-  static void setFromPlatformModifiers(EventModifierInit&,
-                                       const PlatformEvent::Modifiers);
   static void setFromWebInputEventModifiers(EventModifierInit&,
                                             WebInputEvent::Modifiers);
 
   bool getModifierState(const String& keyIdentifier) const;
 
-  PlatformEvent::Modifiers modifiers() const {
-    return static_cast<PlatformEvent::Modifiers>(m_modifiers);
+  WebInputEvent::Modifiers modifiers() const {
+    return static_cast<WebInputEvent::Modifiers>(m_modifiers);
   }
 
  protected:
   UIEventWithKeyState() : m_modifiers(0) {}
 
   UIEventWithKeyState(const AtomicString& type,
                       bool canBubble,
                       bool cancelable,
                       AbstractView*,
                       int detail,
-                      PlatformEvent::Modifiers,
+                      WebInputEvent::Modifiers,
                       TimeTicks platformTimeStamp,
                       InputDeviceCapabilities* sourceCapabilities = nullptr);
   UIEventWithKeyState(const AtomicString& type,
                       const EventModifierInit& initializer);
   void initModifiers(bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
 
   unsigned m_modifiers;
 
  private:
   static bool s_newTabModifierSetFromIsolatedWorld;
 };
 
 UIEventWithKeyState* findEventWithKeyState(Event*);
 
 }  // namespace blink
 
 #endif  // UIEventWithKeyState_h