Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/dom/shadow/SlotAssignment.cpp

 // Copyright 2015 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.
 
 #include "core/dom/shadow/SlotAssignment.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/shadow/InsertionPoint.h"
@@ skipping 10 matching lines @@
 static void detachNotAssignedNode(Node& node)
 {
     if (node.layoutObject())
         node.lazyReattachIfAttached();
 }
 
 void SlotAssignment::resolveAssignment(ShadowRoot& shadowRoot)
 {
     m_assignment.clear();
 
-    using Name2Slot = WillBeHeapHashMap<AtomicString, RefPtrWillBeMember<HTMLSlotElement>>;
+    using Name2Slot = HeapHashMap<AtomicString, Member<HTMLSlotElement>>;
     Name2Slot name2slot;
     HTMLSlotElement* defaultSlot = nullptr;
 
-    const WillBeHeapVector<RefPtrWillBeMember<HTMLSlotElement>>& slots = shadowRoot.descendantSlots();
+    const HeapVector<Member<HTMLSlotElement>>& slots = shadowRoot.descendantSlots();
 
-    for (RefPtrWillBeMember<HTMLSlotElement> slot : slots) {
+    for (Member<HTMLSlotElement> slot : slots) {
         slot->clearDistribution();
         AtomicString name = slot->fastGetAttribute(HTMLNames::nameAttr);
         if (name.isNull() || name.isEmpty()) {
             if (!defaultSlot)
                 defaultSlot = slot.get();
         } else {
             name2slot.add(name, slot.get());
         }
     }
 
@@ skipping 41 matching lines @@
 }
 
 DEFINE_TRACE(SlotAssignment)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_assignment);
 #endif
 }
 
 } // namespace blink