Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/HTMLSlotElement.h

Index: third_party/WebKit/Source/core/html/HTMLSlotElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLSlotElement.h b/third_party/WebKit/Source/core/html/HTMLSlotElement.h
index 828099919c1145bf7ecd888e6d359ed7fa495e6e..a99d623f57d09caadac2d485ca0eedfb5d3788bf 100644
--- a/third_party/WebKit/Source/core/html/HTMLSlotElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLSlotElement.h
@@ -43,9 +43,9 @@ class CORE_EXPORT HTMLSlotElement final : public HTMLElement {
 public:
     DECLARE_NODE_FACTORY(HTMLSlotElement);
 
-    const WillBeHeapVector<RefPtrWillBeMember<Node>>& getAssignedNodes() const { ASSERT(!needsDistributionRecalc()); return m_assignedNodes; }
-    const WillBeHeapVector<RefPtrWillBeMember<Node>>& getDistributedNodes();
-    const WillBeHeapVector<RefPtrWillBeMember<Node>> getAssignedNodesForBinding(const AssignedNodesOptions&);
+    const HeapVector<Member<Node>>& getAssignedNodes() const { ASSERT(!needsDistributionRecalc()); return m_assignedNodes; }
+    const HeapVector<Member<Node>>& getDistributedNodes();
+    const HeapVector<Member<Node>> getAssignedNodesForBinding(const AssignedNodesOptions&);
 
     Node* firstDistributedNode() const { return m_distributedNodes.isEmpty() ? nullptr : m_distributedNodes.first().get(); }
     Node* lastDistributedNode() const { return m_distributedNodes.isEmpty() ? nullptr : m_distributedNodes.last().get(); }
@@ -89,11 +89,11 @@ private:
     void dispatchSlotChangeEvent();
     bool distributionChanged();
 
-    WillBeHeapVector<RefPtrWillBeMember<Node>> m_assignedNodes;
-    WillBeHeapVector<RefPtrWillBeMember<Node>> m_distributedNodes;
-    WillBeHeapHashMap<RawPtrWillBeMember<const Node>, size_t> m_distributedIndices;
+    HeapVector<Member<Node>> m_assignedNodes;
+    HeapVector<Member<Node>> m_distributedNodes;
+    HeapHashMap<Member<const Node>, size_t> m_distributedIndices;
     // TODO(hayato): Remove m_oldDistibutedNodes and make SlotAssignment check the diffirence between old and new distributed nodes for each slot to save the memories.
-    WillBeHeapVector<RefPtrWillBeMember<Node>> m_oldDistributedNodes;
+    HeapVector<Member<Node>> m_oldDistributedNodes;
     DistributionState m_distributionState;
 };