Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/svg/SVGAnimateMotionElement.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 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.
  *
@@ skipping 266 matching lines @@
         return;
 
     if (LayoutObject* layoutObject = targetElement->layoutObject())
         markForLayoutAndParentResourceInvalidation(layoutObject);
 
     AffineTransform* t = targetElement->animateMotionTransform();
     if (!t)
         return;
 
     // ...except in case where we have additional instances in <use> trees.
-    const WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement>>& instances = targetElement->instancesForElement();
+    const HeapHashSet<WeakMember<SVGElement>>& instances = targetElement->instancesForElement();
     for (SVGElement* shadowTreeElement : instances) {
         ASSERT(shadowTreeElement);
         AffineTransform* transform = shadowTreeElement->animateMotionTransform();
         if (!transform)
             continue;
         transform->setMatrix(t->a(), t->b(), t->c(), t->d(), t->e(), t->f());
         if (LayoutObject* layoutObject = shadowTreeElement->layoutObject()) {
             layoutObject->setNeedsTransformUpdate();
             markForLayoutAndParentResourceInvalidation(layoutObject);
         }
@@ skipping 14 matching lines @@
 
 void SVGAnimateMotionElement::updateAnimationMode()
 {
     if (!m_animationPath.isEmpty())
         setAnimationMode(PathAnimation);
     else
         SVGAnimationElement::updateAnimationMode();
 }
 
 } // namespace blink