Oilpan: Remove ref counting from EventTarget and all uses of Pass/RefPtr<EventTarget>.

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 3461 matching lines @@
 
     // Holds the complete set of touches on the screen.
     RefPtrWillBeRawPtr<TouchList> touches = TouchList::create();
 
     // A different view on the 'touches' list above, filtered and grouped by
     // event target. Used for the 'targetTouches' list in the JS event.
     typedef WillBeHeapHashMap<EventTarget*, RefPtrWillBeMember<TouchList> > TargetTouchesHeapMap;
     TargetTouchesHeapMap touchesByTarget;
 
     // Array of touches per state, used to assemble the 'changedTouches' list.
-    typedef HashSet<RefPtr<EventTarget> > EventTargetSet;
+    typedef WillBeHeapHashSet<RefPtrWillBeMember<EventTarget> > EventTargetSet;
     struct {
         // The touches corresponding to the particular change state this struct
         // instance represents.
         RefPtrWillBeMember<TouchList> m_touches;
         // Set of targets involved in m_touches.
         EventTargetSet m_targets;
     } changedTouches[PlatformTouchPoint::TouchStateEnd];
 
     for (i = 0; i < points.size(); ++i) {
         const PlatformTouchPoint& point = points[i];
         LayoutPoint pagePoint = documentPointForWindowPoint(m_frame, point.pos());
         PlatformTouchPoint::State pointState = point.state();
-        RefPtr<EventTarget> touchTarget;
+        RefPtrWillBeRawPtr<EventTarget> touchTarget = nullptr;
 
         if (pointState == PlatformTouchPoint::TouchReleased || pointState == PlatformTouchPoint::TouchCancelled) {
             // The target should be the original target for this touch, so get
             // it from the hashmap. As it's a release or cancel we also remove
             // it from the map.
             touchTarget = m_targetForTouchID.take(point.id());
         } else {
             // No hittest is performed on move or stationary, since the target
             // is not allowed to change anyway.
             touchTarget = m_targetForTouchID.get(point.id());
@@ skipping 227 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore