[Oilpan]: Move HTMLStackItem and friends to the oilpan heap.

Source/core/html/parser/HTMLElementStack.cpp

Index: Source/core/html/parser/HTMLElementStack.cpp
diff --git a/Source/core/html/parser/HTMLElementStack.cpp b/Source/core/html/parser/HTMLElementStack.cpp
index ccbbdd87ace9cab855ba06270409954e9d0d9d5d..92db841a363ee9007e3c4522b940fba0bc87df20 100644
--- a/Source/core/html/parser/HTMLElementStack.cpp
+++ b/Source/core/html/parser/HTMLElementStack.cpp
@@ -119,18 +119,20 @@ inline bool isSelectScopeMarker(HTMLStackItem* item)
 
 }
 
-HTMLElementStack::ElementRecord::ElementRecord(PassRefPtr<HTMLStackItem> item, PassOwnPtr<ElementRecord> next)
+HTMLElementStack::ElementRecord::ElementRecord(PassRefPtrWillBeRawPtr<HTMLStackItem> item, PassOwnPtrWillBeRawPtr<ElementRecord> next)
     : m_item(item)
     , m_next(next)
 {
     ASSERT(m_item);
 }
 
+#if !ENABLE(OILPAN)
 HTMLElementStack::ElementRecord::~ElementRecord()
 {
 }
+#endif
 
-void HTMLElementStack::ElementRecord::replaceElement(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::ElementRecord::replaceElement(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(item);
     ASSERT(!m_item || m_item->isElementNode());
@@ -147,10 +149,18 @@ bool HTMLElementStack::ElementRecord::isAbove(ElementRecord* other) const
     return false;
 }
 
+void HTMLElementStack::ElementRecord::trace(Visitor* visitor)
+{
+#if ENABLE(OILPAN)
+    visitor->trace(m_item);
+    visitor->trace(m_next);
+#endif
+}
+
 HTMLElementStack::HTMLElementStack()
-    : m_rootNode(0)
-    , m_headElement(0)
-    , m_bodyElement(0)
+    : m_rootNode(nullptr)
+    , m_headElement(nullptr)
+    , m_bodyElement(nullptr)
     , m_stackDepth(0)
 {
 }
@@ -179,22 +189,22 @@ bool HTMLElementStack::secondElementIsHTMLBodyElement() const
 void HTMLElementStack::popHTMLHeadElement()
 {
     ASSERT(top() == m_headElement);
-    m_headElement = 0;
+    m_headElement = nullptr;
     popCommon();
 }
 
 void HTMLElementStack::popHTMLBodyElement()
 {
     ASSERT(top() == m_bodyElement);
-    m_bodyElement = 0;
+    m_bodyElement = nullptr;
     popCommon();
 }
 
 void HTMLElementStack::popAll()
 {
-    m_rootNode = 0;
-    m_headElement = 0;
-    m_bodyElement = 0;
+    m_rootNode = nullptr;
+    m_headElement = nullptr;
+    m_bodyElement = nullptr;
     m_stackDepth = 0;
     while (m_top) {
         Node& node = *topNode();
@@ -301,19 +311,19 @@ void HTMLElementStack::popUntilForeignContentScopeMarker()
         pop();
 }
 
-void HTMLElementStack::pushRootNode(PassRefPtr<HTMLStackItem> rootItem)
+void HTMLElementStack::pushRootNode(PassRefPtrWillBeRawPtr<HTMLStackItem> rootItem)
 {
     ASSERT(rootItem->isDocumentFragmentNode());
     pushRootNodeCommon(rootItem);
 }
 
-void HTMLElementStack::pushHTMLHtmlElement(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::pushHTMLHtmlElement(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(item->hasTagName(htmlTag));
     pushRootNodeCommon(item);
 }
 
-void HTMLElementStack::pushRootNodeCommon(PassRefPtr<HTMLStackItem> rootItem)
+void HTMLElementStack::pushRootNodeCommon(PassRefPtrWillBeRawPtr<HTMLStackItem> rootItem)
 {
     ASSERT(!m_top);
     ASSERT(!m_rootNode);
@@ -321,7 +331,7 @@ void HTMLElementStack::pushRootNodeCommon(PassRefPtr<HTMLStackItem> rootItem)
     pushCommon(rootItem);
 }
 
-void HTMLElementStack::pushHTMLHeadElement(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::pushHTMLHeadElement(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(item->hasTagName(HTMLNames::headTag));
     ASSERT(!m_headElement);
@@ -329,7 +339,7 @@ void HTMLElementStack::pushHTMLHeadElement(PassRefPtr<HTMLStackItem> item)
     pushCommon(item);
 }
 
-void HTMLElementStack::pushHTMLBodyElement(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::pushHTMLBodyElement(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(item->hasTagName(HTMLNames::bodyTag));
     ASSERT(!m_bodyElement);
@@ -337,7 +347,7 @@ void HTMLElementStack::pushHTMLBodyElement(PassRefPtr<HTMLStackItem> item)
     pushCommon(item);
 }
 
-void HTMLElementStack::push(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::push(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(!item->hasTagName(htmlTag));
     ASSERT(!item->hasTagName(headTag));
@@ -346,7 +356,7 @@ void HTMLElementStack::push(PassRefPtr<HTMLStackItem> item)
     pushCommon(item);
 }
 
-void HTMLElementStack::insertAbove(PassRefPtr<HTMLStackItem> item, ElementRecord* recordBelow)
+void HTMLElementStack::insertAbove(PassRefPtrWillBeRawPtr<HTMLStackItem> item, ElementRecord* recordBelow)
 {
     ASSERT(item);
     ASSERT(recordBelow);
@@ -365,7 +375,7 @@ void HTMLElementStack::insertAbove(PassRefPtr<HTMLStackItem> item, ElementRecord
             continue;
 
         m_stackDepth++;
-        recordAbove->setNext(adoptPtr(new ElementRecord(item, recordAbove->releaseNext())));
+        recordAbove->setNext(adoptPtrWillBeNoop(new ElementRecord(item, recordAbove->releaseNext())));
         recordAbove->next()->element()->beginParsingChildren();
         return;
     }
@@ -395,7 +405,7 @@ void HTMLElementStack::removeHTMLHeadElement(Element* element)
         popHTMLHeadElement();
         return;
     }
-    m_headElement = 0;
+    m_headElement = nullptr;
     removeNonTopCommon(element);
 }
 
@@ -556,12 +566,12 @@ ContainerNode* HTMLElementStack::rootNode() const
     return m_rootNode;
 }
 
-void HTMLElementStack::pushCommon(PassRefPtr<HTMLStackItem> item)
+void HTMLElementStack::pushCommon(PassRefPtrWillBeRawPtr<HTMLStackItem> item)
 {
     ASSERT(m_rootNode);
 
     m_stackDepth++;
-    m_top = adoptPtr(new ElementRecord(item, m_top.release()));
+    m_top = adoptPtrWillBeNoop(new ElementRecord(item, m_top.release()));
 }
 
 void HTMLElementStack::popCommon()
@@ -606,6 +616,14 @@ HTMLElementStack::ElementRecord* HTMLElementStack::furthestBlockForFormattingEle
     return 0;
 }
 
+void HTMLElementStack::trace(Visitor* visitor)
+{
+    visitor->trace(m_top);
+    visitor->trace(m_rootNode);
+    visitor->trace(m_headElement);
+    visitor->trace(m_bodyElement);
+}
+
 #ifndef NDEBUG
 
 void HTMLElementStack::show()