Oilpan: move editing objects to the heap.

Source/core/editing/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 57 matching lines @@
 #include "core/rendering/RenderBlock.h"
 #include "core/rendering/RenderListItem.h"
 #include "core/rendering/RenderText.h"
 
 using namespace std;
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
-PassRefPtr<EditCommandComposition> EditCommandComposition::create(Document* document,
+PassRefPtrWillBeRawPtr<EditCommandComposition> EditCommandComposition::create(Document* document,
     const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction editAction)
 {
-    return adoptRef(new EditCommandComposition(document, startingSelection, endingSelection, editAction));
+    return adoptRefWillBeNoop(new EditCommandComposition(document, startingSelection, endingSelection, editAction));
 }
 
 EditCommandComposition::EditCommandComposition(Document* document, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction editAction)
     : m_document(document)
     , m_startingSelection(startingSelection)
     , m_endingSelection(endingSelection)
     , m_startingRootEditableElement(startingSelection.rootEditableElement())
     , m_endingRootEditableElement(endingSelection.rootEditableElement())
     , m_editAction(editAction)
 {
@@ skipping 55 matching lines @@
     m_startingSelection = selection;
     m_startingRootEditableElement = selection.rootEditableElement();
 }
 
 void EditCommandComposition::setEndingSelection(const VisibleSelection& selection)
 {
     m_endingSelection = selection;
     m_endingRootEditableElement = selection.rootEditableElement();
 }
 
+void EditCommandComposition::trace(Visitor* visitor)
+{
+    visitor->trace(m_document);
+    visitor->trace(m_startingSelection);
+    visitor->trace(m_endingSelection);
+    visitor->trace(m_commands);
+    visitor->trace(m_startingRootEditableElement);
+    visitor->trace(m_endingRootEditableElement);
+    UndoStep::trace(visitor);
+}
+
 CompositeEditCommand::CompositeEditCommand(Document& document)
     : EditCommand(document)
 {
 }
 
 CompositeEditCommand::~CompositeEditCommand()
 {
     ASSERT(isTopLevelCommand() || !m_composition);
 }
 
@@ skipping 54 matching lines @@
     return false;
 }
 
 void CompositeEditCommand::setShouldRetainAutocorrectionIndicator(bool)
 {
 }
 
 //
 // sugary-sweet convenience functions to help create and apply edit commands in composite commands
 //
-void CompositeEditCommand::applyCommandToComposite(PassRefPtr<EditCommand> prpCommand)
+void CompositeEditCommand::applyCommandToComposite(PassRefPtrWillBeRawPtr<EditCommand> prpCommand)
 {
-    RefPtr<EditCommand> command = prpCommand;
+    RefPtrWillBeRawPtr<EditCommand> command = prpCommand;
     command->setParent(this);
     command->doApply();
     if (command->isSimpleEditCommand()) {
         command->setParent(0);
         ensureComposition()->append(toSimpleEditCommand(command.get()));
     }
     m_commands.append(command.release());
 }
 
-void CompositeEditCommand::applyCommandToComposite(PassRefPtr<CompositeEditCommand> command, const VisibleSelection& selection)
+void CompositeEditCommand::applyCommandToComposite(PassRefPtrWillBeRawPtr<CompositeEditCommand> command, const VisibleSelection& selection)
 {
     command->setParent(this);
     if (selection != command->endingSelection()) {
         command->setStartingSelection(selection);
         command->setEndingSelection(selection);
     }
     command->doApply();
     m_commands.append(command);
 }
 
 void CompositeEditCommand::applyStyle(const EditingStyle* style, EditAction editingAction)
 {
     applyCommandToComposite(ApplyStyleCommand::create(document(), style, editingAction));
 }
 
 void CompositeEditCommand::applyStyle(const EditingStyle* style, const Position& start, const Position& end, EditAction editingAction)
 {
     applyCommandToComposite(ApplyStyleCommand::create(document(), style, start, end, editingAction));
 }
 
-void CompositeEditCommand::applyStyledElement(PassRefPtr<Element> element)
+void CompositeEditCommand::applyStyledElement(PassRefPtrWillBeRawPtr<Element> element)
 {
     applyCommandToComposite(ApplyStyleCommand::create(element, false));
 }
 
-void CompositeEditCommand::removeStyledElement(PassRefPtr<Element> element)
+void CompositeEditCommand::removeStyledElement(PassRefPtrWillBeRawPtr<Element> element)
 {
     applyCommandToComposite(ApplyStyleCommand::create(element, true));
 }
 
 void CompositeEditCommand::insertParagraphSeparator(bool useDefaultParagraphElement, bool pasteBlockqutoeIntoUnquotedArea)
 {
     applyCommandToComposite(InsertParagraphSeparatorCommand::create(document(), useDefaultParagraphElement, pasteBlockqutoeIntoUnquotedArea));
 }
 
 bool CompositeEditCommand::isRemovableBlock(const Node* node)
 {
     ASSERT(node);
     if (!isHTMLDivElement(*node))
         return false;
 
     Node* parentNode = node->parentNode();
     if (parentNode && parentNode->firstChild() != parentNode->lastChild())
         return false;
 
     if (!toElement(node)->hasAttributes())
         return true;
 
     return false;
 }
 
-void CompositeEditCommand::insertNodeBefore(PassRefPtr<Node> insertChild, PassRefPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
+void CompositeEditCommand::insertNodeBefore(PassRefPtrWillBeRawPtr<Node> insertChild, PassRefPtrWillBeRawPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
 {
     ASSERT(!isHTMLBodyElement(*refChild));
     applyCommandToComposite(InsertNodeBeforeCommand::create(insertChild, refChild, shouldAssumeContentIsAlwaysEditable));
 }
 
-void CompositeEditCommand::insertNodeAfter(PassRefPtr<Node> insertChild, PassRefPtr<Node> refChild)
+void CompositeEditCommand::insertNodeAfter(PassRefPtrWillBeRawPtr<Node> insertChild, PassRefPtrWillBeRawPtr<Node> refChild)
 {
     ASSERT(insertChild);
     ASSERT(refChild);
     ASSERT(!isHTMLBodyElement(*refChild));
     ContainerNode* parent = refChild->parentNode();
     ASSERT(parent);
     ASSERT(!parent->isShadowRoot());
     if (parent->lastChild() == refChild)
         appendNode(insertChild, parent);
     else {
         ASSERT(refChild->nextSibling());
         insertNodeBefore(insertChild, refChild->nextSibling());
     }
 }
 
-void CompositeEditCommand::insertNodeAt(PassRefPtr<Node> insertChild, const Position& editingPosition)
+void CompositeEditCommand::insertNodeAt(PassRefPtrWillBeRawPtr<Node> insertChild, const Position& editingPosition)
 {
     ASSERT(isEditablePosition(editingPosition, ContentIsEditable, DoNotUpdateStyle));
     // For editing positions like [table, 0], insert before the table,
     // likewise for replaced elements, brs, etc.
     Position p = editingPosition.parentAnchoredEquivalent();
     Node* refChild = p.deprecatedNode();
     int offset = p.deprecatedEditingOffset();
 
     if (canHaveChildrenForEditing(refChild)) {
         Node* child = refChild->firstChild();
         for (int i = 0; child && i < offset; i++)
             child = child->nextSibling();
         if (child)
             insertNodeBefore(insertChild, child);
         else
             appendNode(insertChild, toContainerNode(refChild));
     } else if (caretMinOffset(refChild) >= offset)
         insertNodeBefore(insertChild, refChild);
     else if (refChild->isTextNode() && caretMaxOffset(refChild) > offset) {
         splitTextNode(toText(refChild), offset);
 
         // Mutation events (bug 22634) from the text node insertion may have removed the refChild
         if (!refChild->inDocument())
             return;
         insertNodeBefore(insertChild, refChild);
     } else
         insertNodeAfter(insertChild, refChild);
 }
 
-void CompositeEditCommand::appendNode(PassRefPtr<Node> node, PassRefPtr<ContainerNode> parent)
+void CompositeEditCommand::appendNode(PassRefPtrWillBeRawPtr<Node> node, PassRefPtrWillBeRawPtr<ContainerNode> parent)
 {
     ASSERT(canHaveChildrenForEditing(parent.get()));
     applyCommandToComposite(AppendNodeCommand::create(parent, node));
 }
 
-void CompositeEditCommand::removeChildrenInRange(PassRefPtr<Node> node, unsigned from, unsigned to)
+void CompositeEditCommand::removeChildrenInRange(PassRefPtrWillBeRawPtr<Node> node, unsigned from, unsigned to)
 {
-    Vector<RefPtr<Node> > children;
+    WillBeHeapVector<RefPtrWillBeMember<Node> > children;
     Node* child = node->traverseToChildAt(from);
     for (unsigned i = from; child && i < to; i++, child = child->nextSibling())
         children.append(child);
 
     size_t size = children.size();
     for (size_t i = 0; i < size; ++i)
         removeNode(children[i].release());
 }
 
-void CompositeEditCommand::removeNode(PassRefPtr<Node> node, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
+void CompositeEditCommand::removeNode(PassRefPtrWillBeRawPtr<Node> node, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
 {
     if (!node || !node->nonShadowBoundaryParentNode())
         return;
     applyCommandToComposite(RemoveNodeCommand::create(node, shouldAssumeContentIsAlwaysEditable));
 }
 
-void CompositeEditCommand::removeNodePreservingChildren(PassRefPtr<Node> node, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
+void CompositeEditCommand::removeNodePreservingChildren(PassRefPtrWillBeRawPtr<Node> node, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
 {
     applyCommandToComposite(RemoveNodePreservingChildrenCommand::create(node, shouldAssumeContentIsAlwaysEditable));
 }
 
-void CompositeEditCommand::removeNodeAndPruneAncestors(PassRefPtr<Node> node, Node* excludeNode)
+void CompositeEditCommand::removeNodeAndPruneAncestors(PassRefPtrWillBeRawPtr<Node> node, Node* excludeNode)
 {
     ASSERT(node.get() != excludeNode);
-    RefPtr<ContainerNode> parent = node->parentNode();
+    RefPtrWillBeRawPtr<ContainerNode> parent = node->parentNode();
     removeNode(node);
     prune(parent.release(), excludeNode);
 }
 
-void CompositeEditCommand::moveRemainingSiblingsToNewParent(Node* node, Node* pastLastNodeToMove, PassRefPtr<Element> prpNewParent)
+void CompositeEditCommand::moveRemainingSiblingsToNewParent(Node* node, Node* pastLastNodeToMove, PassRefPtrWillBeRawPtr<Element> prpNewParent)
 {
     NodeVector nodesToRemove;
-    RefPtr<Element> newParent = prpNewParent;
+    RefPtrWillBeRawPtr<Element> newParent = prpNewParent;
 
     for (; node && node != pastLastNodeToMove; node = node->nextSibling())
         nodesToRemove.append(node);
 
     for (unsigned i = 0; i < nodesToRemove.size(); i++) {
         removeNode(nodesToRemove[i]);
         appendNode(nodesToRemove[i], newParent);
     }
 }
 
 void CompositeEditCommand::updatePositionForNodeRemovalPreservingChildren(Position& position, Node& node)
 {
     int offset = (position.anchorType() == Position::PositionIsOffsetInAnchor) ? position.offsetInContainerNode() : 0;
     updatePositionForNodeRemoval(position, node);
     if (offset)
         position.moveToOffset(offset);
 }
 
 HTMLElement* CompositeEditCommand::replaceElementWithSpanPreservingChildrenAndAttributes(PassRefPtrWillBeRawPtr<HTMLElement> node)
 {
     // It would also be possible to implement all of ReplaceNodeWithSpanCommand
     // as a series of existing smaller edit commands.  Someone who wanted to
     // reduce the number of edit commands could do so here.
-    RefPtr<ReplaceNodeWithSpanCommand> command = ReplaceNodeWithSpanCommand::create(node);
+    RefPtrWillBeRawPtr<ReplaceNodeWithSpanCommand> command = ReplaceNodeWithSpanCommand::create(node);
     applyCommandToComposite(command);
     // Returning a raw pointer here is OK because the command is retained by
     // applyCommandToComposite (thus retaining the span), and the span is also
     // in the DOM tree, and thus alive whie it has a parent.
     ASSERT(command->spanElement()->inDocument());
     return command->spanElement();
 }
 
-void CompositeEditCommand::prune(PassRefPtr<Node> node, Node* excludeNode)
+void CompositeEditCommand::prune(PassRefPtrWillBeRawPtr<Node> node, Node* excludeNode)
 {
-    if (RefPtr<Node> highestNodeToRemove = highestNodeToRemoveInPruning(node.get(), excludeNode))
+    if (RefPtrWillBeRawPtr<Node> highestNodeToRemove = highestNodeToRemoveInPruning(node.get(), excludeNode))
         removeNode(highestNodeToRemove.release());
 }
 
 void CompositeEditCommand::splitTextNode(PassRefPtrWillBeRawPtr<Text> node, unsigned offset)
 {
     applyCommandToComposite(SplitTextNodeCommand::create(node, offset));
 }
 
-void CompositeEditCommand::splitElement(PassRefPtr<Element> element, PassRefPtr<Node> atChild)
+void CompositeEditCommand::splitElement(PassRefPtrWillBeRawPtr<Element> element, PassRefPtrWillBeRawPtr<Node> atChild)
 {
     applyCommandToComposite(SplitElementCommand::create(element, atChild));
 }
 
-void CompositeEditCommand::mergeIdenticalElements(PassRefPtr<Element> prpFirst, PassRefPtr<Element> prpSecond)
+void CompositeEditCommand::mergeIdenticalElements(PassRefPtrWillBeRawPtr<Element> prpFirst, PassRefPtrWillBeRawPtr<Element> prpSecond)
 {
-    RefPtr<Element> first = prpFirst;
-    RefPtr<Element> second = prpSecond;
+    RefPtrWillBeRawPtr<Element> first = prpFirst;
+    RefPtrWillBeRawPtr<Element> second = prpSecond;
     ASSERT(!first->isDescendantOf(second.get()) && second != first);
     if (first->nextSibling() != second) {
         removeNode(second);
         insertNodeAfter(second, first);
     }
     applyCommandToComposite(MergeIdenticalElementsCommand::create(first, second));
 }
 
-void CompositeEditCommand::wrapContentsInDummySpan(PassRefPtr<Element> element)
+void CompositeEditCommand::wrapContentsInDummySpan(PassRefPtrWillBeRawPtr<Element> element)
 {
     applyCommandToComposite(WrapContentsInDummySpanCommand::create(element));
 }
 
 void CompositeEditCommand::splitTextNodeContainingElement(PassRefPtrWillBeRawPtr<Text> text, unsigned offset)
 {
     applyCommandToComposite(SplitTextNodeContainingElementCommand::create(text, offset));
 }
 
 void CompositeEditCommand::insertTextIntoNode(PassRefPtrWillBeRawPtr<Text> node, unsigned offset, const String& text)
@@ skipping 72 matching lines @@
     if (pos.offsetInContainerNode() <= caretMinOffset(pos.containerNode()))
         return positionInParentBeforeNode(*tabSpan);
 
     if (pos.offsetInContainerNode() >= caretMaxOffset(pos.containerNode()))
         return positionInParentAfterNode(*tabSpan);
 
     splitTextNodeContainingElement(toText(pos.containerNode()), pos.offsetInContainerNode());
     return positionInParentBeforeNode(*tabSpan);
 }
 
-void CompositeEditCommand::insertNodeAtTabSpanPosition(PassRefPtr<Node> node, const Position& pos)
+void CompositeEditCommand::insertNodeAtTabSpanPosition(PassRefPtrWillBeRawPtr<Node> node, const Position& pos)
 {
     // insert node before, after, or at split of tab span
     insertNodeAt(node, positionOutsideTabSpan(pos));
 }
 
 void CompositeEditCommand::deleteSelection(bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool sanitizeMarkup)
 {
     if (endingSelection().isRange())
         applyCommandToComposite(DeleteSelectionCommand::create(document(), smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup));
 }
 
 void CompositeEditCommand::deleteSelection(const VisibleSelection &selection, bool smartDelete, bool mergeBlocksAfterDelete, bool expandForSpecialElements, bool sanitizeMarkup)
 {
     if (selection.isRange())
         applyCommandToComposite(DeleteSelectionCommand::create(selection, smartDelete, mergeBlocksAfterDelete, expandForSpecialElements, sanitizeMarkup));
 }
 
-void CompositeEditCommand::removeCSSProperty(PassRefPtr<Element> element, CSSPropertyID property)
+void CompositeEditCommand::removeCSSProperty(PassRefPtrWillBeRawPtr<Element> element, CSSPropertyID property)
 {
     applyCommandToComposite(RemoveCSSPropertyCommand::create(document(), element, property));
 }
 
-void CompositeEditCommand::removeNodeAttribute(PassRefPtr<Element> element, const QualifiedName& attribute)
+void CompositeEditCommand::removeNodeAttribute(PassRefPtrWillBeRawPtr<Element> element, const QualifiedName& attribute)
 {
     setNodeAttribute(element, attribute, AtomicString());
 }
 
-void CompositeEditCommand::setNodeAttribute(PassRefPtr<Element> element, const QualifiedName& attribute, const AtomicString& value)
+void CompositeEditCommand::setNodeAttribute(PassRefPtrWillBeRawPtr<Element> element, const QualifiedName& attribute, const AtomicString& value)
 {
     applyCommandToComposite(SetNodeAttributeCommand::create(element, attribute, value));
 }
 
 static inline bool containsOnlyWhitespace(const String& text)
 {
     for (unsigned i = 0; i < text.length(); ++i) {
         if (!isWhitespace(text[i]))
             return false;
     }
@@ skipping 224 matching lines @@
         deleteInsignificantText(textNode, startOffset, endOffset);
     }
 }
 
 void CompositeEditCommand::deleteInsignificantTextDownstream(const Position& pos)
 {
     Position end = VisiblePosition(pos, VP_DEFAULT_AFFINITY).next().deepEquivalent().downstream();
     deleteInsignificantText(pos, end);
 }
 
-PassRefPtr<Node> CompositeEditCommand::appendBlockPlaceholder(PassRefPtr<Element> container)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::appendBlockPlaceholder(PassRefPtrWillBeRawPtr<Element> container)
 {
     if (!container)
         return nullptr;
 
     document().updateLayoutIgnorePendingStylesheets();
 
     // Should assert isRenderBlockFlow || isInlineFlow when deletion improves. See 4244964.
     ASSERT(container->renderer());
 
-    RefPtr<Node> placeholder = createBlockPlaceholderElement(document());
+    RefPtrWillBeRawPtr<Node> placeholder = createBlockPlaceholderElement(document());
     appendNode(placeholder, container);
     return placeholder.release();
 }
 
-PassRefPtr<Node> CompositeEditCommand::insertBlockPlaceholder(const Position& pos)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::insertBlockPlaceholder(const Position& pos)
 {
     if (pos.isNull())
         return nullptr;
 
     // Should assert isRenderBlockFlow || isInlineFlow when deletion improves. See 4244964.
     ASSERT(pos.deprecatedNode()->renderer());
 
-    RefPtr<Node> placeholder = createBlockPlaceholderElement(document());
+    RefPtrWillBeRawPtr<Node> placeholder = createBlockPlaceholderElement(document());
     insertNodeAt(placeholder, pos);
     return placeholder.release();
 }
 
-PassRefPtr<Node> CompositeEditCommand::addBlockPlaceholderIfNeeded(Element* container)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::addBlockPlaceholderIfNeeded(Element* container)
 {
     if (!container)
         return nullptr;
 
     document().updateLayoutIgnorePendingStylesheets();
 
     RenderObject* renderer = container->renderer();
     if (!renderer || !renderer->isRenderBlockFlow())
         return nullptr;
 
@@ skipping 13 matching lines @@
 
     // We are certain that the position is at a line break, but it may be a br or a preserved newline.
     if (isHTMLBRElement(*p.anchorNode())) {
         removeNode(p.anchorNode());
         return;
     }
 
     deleteTextFromNode(toText(p.anchorNode()), p.offsetInContainerNode(), 1);
 }
 
-PassRefPtr<Node> CompositeEditCommand::insertNewDefaultParagraphElementAt(const Position& position)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::insertNewDefaultParagraphElementAt(const Position& position)
 {
-    RefPtr<Element> paragraphElement = createDefaultParagraphElement(document());
+    RefPtrWillBeRawPtr<Element> paragraphElement = createDefaultParagraphElement(document());
     paragraphElement->appendChild(createBreakElement(document()));
     insertNodeAt(paragraphElement, position);
     return paragraphElement.release();
 }
 
 // If the paragraph is not entirely within it's own block, create one and move the paragraph into
 // it, and return that block.  Otherwise return 0.
-PassRefPtr<Node> CompositeEditCommand::moveParagraphContentsToNewBlockIfNecessary(const Position& pos)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::moveParagraphContentsToNewBlockIfNecessary(const Position& pos)
 {
     if (pos.isNull())
         return nullptr;
 
     document().updateLayoutIgnorePendingStylesheets();
 
     // It's strange that this function is responsible for verifying that pos has not been invalidated
     // by an earlier call to this function.  The caller, applyBlockStyle, should do this.
     VisiblePosition visiblePos(pos, VP_DEFAULT_AFFINITY);
     VisiblePosition visibleParagraphStart(startOfParagraph(visiblePos));
@@ skipping 31 matching lines @@
             return nullptr;
         } else if (isEndOfEditableOrNonEditableContent(visibleEnd)) {
             // At the end of the editable region. We can bail here as well.
             return nullptr;
         }
     }
 
     if (visibleParagraphEnd.isNull())
         return nullptr;
 
-    RefPtr<Node> newBlock = insertNewDefaultParagraphElementAt(upstreamStart);
+    RefPtrWillBeRawPtr<Node> newBlock = insertNewDefaultParagraphElementAt(upstreamStart);
 
     bool endWasBr = isHTMLBRElement(*visibleParagraphEnd.deepEquivalent().deprecatedNode());
 
     moveParagraphs(visibleParagraphStart, visibleParagraphEnd, VisiblePosition(firstPositionInNode(newBlock.get())));
 
     if (newBlock->lastChild() && isHTMLBRElement(*newBlock->lastChild()) && !endWasBr)
         removeNode(newBlock->lastChild());
 
     return newBlock.release();
 }
@@ skipping 15 matching lines @@
 // Clone the paragraph between start and end under blockElement,
 // preserving the hierarchy up to outerNode.
 
 void CompositeEditCommand::cloneParagraphUnderNewElement(const Position& start, const Position& end, Node* passedOuterNode, Element* blockElement)
 {
     ASSERT(comparePositions(start, end) <= 0);
     ASSERT(passedOuterNode);
     ASSERT(blockElement);
 
     // First we clone the outerNode
-    RefPtr<Node> lastNode;
-    RefPtr<Node> outerNode = passedOuterNode;
+    RefPtrWillBeRawPtr<Node> lastNode = nullptr;
+    RefPtrWillBeRawPtr<Node> outerNode = passedOuterNode;
 
     if (outerNode->isRootEditableElement()) {
         lastNode = blockElement;
     } else {
         lastNode = outerNode->cloneNode(isRenderedTableElement(outerNode.get()));
         appendNode(lastNode, blockElement);
     }
 
     if (start.anchorNode() != outerNode && lastNode->isElementNode() && start.anchorNode()->isDescendantOf(outerNode.get())) {
-        Vector<RefPtr<Node> > ancestors;
+        WillBeHeapVector<RefPtrWillBeMember<Node> > ancestors;
 
         // Insert each node from innerNode to outerNode (excluded) in a list.
         for (Node* n = start.deprecatedNode(); n && n != outerNode; n = n->parentNode())
             ancestors.append(n);
 
         // Clone every node between start.deprecatedNode() and outerBlock.
 
         for (size_t i = ancestors.size(); i != 0; --i) {
             Node* item = ancestors[i - 1].get();
-            RefPtr<Node> child = item->cloneNode(isRenderedTableElement(item));
+            RefPtrWillBeRawPtr<Node> child = item->cloneNode(isRenderedTableElement(item));
             appendNode(child, toElement(lastNode));
             lastNode = child.release();
         }
     }
 
     // Scripts specified in javascript protocol may remove |outerNode|
     // during insertion, e.g. <iframe src="javascript:...">
     if (!outerNode->inDocument())
         return;
 
     // Handle the case of paragraphs with more than one node,
     // cloning all the siblings until end.deprecatedNode() is reached.
 
     if (start.deprecatedNode() != end.deprecatedNode() && !start.deprecatedNode()->isDescendantOf(end.deprecatedNode())) {
         // If end is not a descendant of outerNode we need to
         // find the first common ancestor to increase the scope
         // of our nextSibling traversal.
         while (outerNode && !end.deprecatedNode()->isDescendantOf(outerNode.get())) {
             outerNode = outerNode->parentNode();
         }
 
         if (!outerNode)
             return;
 
-        RefPtr<Node> startNode = start.deprecatedNode();
-        for (RefPtr<Node> node = NodeTraversal::nextSkippingChildren(*startNode, outerNode.get()); node; node = NodeTraversal::nextSkippingChildren(*node, outerNode.get())) {
+        RefPtrWillBeRawPtr<Node> startNode = start.deprecatedNode();
+        for (RefPtrWillBeRawPtr<Node> node = NodeTraversal::nextSkippingChildren(*startNode, outerNode.get()); node; node = NodeTraversal::nextSkippingChildren(*node, outerNode.get())) {
             // Move lastNode up in the tree as much as node was moved up in the
             // tree by NodeTraversal::nextSkippingChildren, so that the relative depth between
             // node and the original start node is maintained in the clone.
             while (startNode && lastNode && startNode->parentNode() != node->parentNode()) {
                 startNode = startNode->parentNode();
                 lastNode = lastNode->parentNode();
             }
 
             if (!lastNode || !lastNode->parentNode())
                 return;
 
-            RefPtr<Node> clonedNode = node->cloneNode(true);
+            RefPtrWillBeRawPtr<Node> clonedNode = node->cloneNode(true);
             insertNodeAfter(clonedNode, lastNode);
             lastNode = clonedNode.release();
             if (node == end.deprecatedNode() || end.deprecatedNode()->isDescendantOf(node.get()))
                 break;
         }
     }
 }
 
 
 // There are bugs in deletion when it removes a fully selected table/list.
@@ skipping 148 matching lines @@
     RefPtrWillBeRawPtr<Range> range = Range::create(document(), startRangeCompliant.deprecatedNode(), startRangeCompliant.deprecatedEditingOffset(), endRangeCompliant.deprecatedNode(), endRangeCompliant.deprecatedEditingOffset());
 
     // FIXME: This is an inefficient way to preserve style on nodes in the paragraph to move. It
     // shouldn't matter though, since moved paragraphs will usually be quite small.
     RefPtrWillBeRawPtr<DocumentFragment> fragment = startOfParagraphToMove != endOfParagraphToMove ?
         createFragmentFromMarkup(document(), createMarkup(range.get(), 0, DoNotAnnotateForInterchange, true, DoNotResolveURLs, constrainingAncestor), "") : nullptr;
 
     // A non-empty paragraph's style is moved when we copy and move it.  We don't move
     // anything if we're given an empty paragraph, but an empty paragraph can have style
     // too, <div><b><br></b></div> for example.  Save it so that we can preserve it later.
-    RefPtr<EditingStyle> styleInEmptyParagraph;
+    RefPtrWillBeRawPtr<EditingStyle> styleInEmptyParagraph = nullptr;
     if (startOfParagraphToMove == endOfParagraphToMove && preserveStyle) {
         styleInEmptyParagraph = EditingStyle::create(startOfParagraphToMove.deepEquivalent());
         styleInEmptyParagraph->mergeTypingStyle(&document());
         // The moved paragraph should assume the block style of the destination.
         styleInEmptyParagraph->removeBlockProperties();
     }
 
     // FIXME (5098931): We should add a new insert action "WebViewInsertActionMoved" and call shouldInsertFragment here.
 
     setEndingSelection(VisibleSelection(start, end, DOWNSTREAM));
@@ skipping 48 matching lines @@
             RefPtrWillBeRawPtr<Range> end = PlainTextRange(destinationIndex + endIndex).createRangeForSelection(*documentElement);
             if (start && end)
                 setEndingSelection(VisibleSelection(start->startPosition(), end->startPosition(), DOWNSTREAM, originalIsDirectional));
         }
     }
 }
 
 // FIXME: Send an appropriate shouldDeleteRange call.
 bool CompositeEditCommand::breakOutOfEmptyListItem()
 {
-    RefPtr<Node> emptyListItem = enclosingEmptyListItem(endingSelection().visibleStart());
+    RefPtrWillBeRawPtr<Node> emptyListItem = enclosingEmptyListItem(endingSelection().visibleStart());
     if (!emptyListItem)
         return false;
 
-    RefPtr<EditingStyle> style = EditingStyle::create(endingSelection().start());
+    RefPtrWillBeRawPtr<EditingStyle> style = EditingStyle::create(endingSelection().start());
     style->mergeTypingStyle(&document());
 
-    RefPtr<ContainerNode> listNode = emptyListItem->parentNode();
+    RefPtrWillBeRawPtr<ContainerNode> listNode = emptyListItem->parentNode();
     // FIXME: Can't we do something better when the immediate parent wasn't a list node?
     if (!listNode
         || (!isHTMLUListElement(*listNode) && !isHTMLOListElement(*listNode))
         || !listNode->rendererIsEditable()
         || listNode == emptyListItem->rootEditableElement())
         return false;
 
-    RefPtr<Element> newBlock = nullptr;
+    RefPtrWillBeRawPtr<Element> newBlock = nullptr;
     if (ContainerNode* blockEnclosingList = listNode->parentNode()) {
         if (isHTMLLIElement(*blockEnclosingList)) { // listNode is inside another list item
             if (visiblePositionAfterNode(*blockEnclosingList) == visiblePositionAfterNode(*listNode)) {
                 // If listNode appears at the end of the outer list item, then move listNode outside of this list item
                 // e.g. <ul><li>hello <ul><li><br></li></ul> </li></ul> should become <ul><li>hello</li> <ul><li><br></li></ul> </ul> after this section
                 // If listNode does NOT appear at the end, then we should consider it as a regular paragraph.
                 // e.g. <ul><li> <ul><li><br></li></ul> hello</li></ul> should become <ul><li> <div><br></div> hello</li></ul> at the end
                 splitElement(toElement(blockEnclosingList), listNode);
                 removeNodePreservingChildren(listNode->parentNode());
                 newBlock = createListItemElement(document());
             }
             // If listNode does NOT appear at the end of the outer list item, then behave as if in a regular paragraph.
         } else if (isHTMLOListElement(*blockEnclosingList) || isHTMLUListElement(*blockEnclosingList)) {
             newBlock = createListItemElement(document());
         }
     }
     if (!newBlock)
         newBlock = createDefaultParagraphElement(document());
 
-    RefPtr<Node> previousListNode = emptyListItem->isElementNode() ? ElementTraversal::previousSibling(*emptyListItem): emptyListItem->previousSibling();
-    RefPtr<Node> nextListNode = emptyListItem->isElementNode() ? ElementTraversal::nextSibling(*emptyListItem): emptyListItem->nextSibling();
+    RefPtrWillBeRawPtr<Node> previousListNode = emptyListItem->isElementNode() ? ElementTraversal::previousSibling(*emptyListItem): emptyListItem->previousSibling();
+    RefPtrWillBeRawPtr<Node> nextListNode = emptyListItem->isElementNode() ? ElementTraversal::nextSibling(*emptyListItem): emptyListItem->nextSibling();
     if (isListItem(nextListNode.get()) || isListElement(nextListNode.get())) {
         // If emptyListItem follows another list item or nested list, split the list node.
         if (isListItem(previousListNode.get()) || isListElement(previousListNode.get()))
             splitElement(toElement(listNode), emptyListItem);
 
         // If emptyListItem is followed by other list item or nested list, then insert newBlock before the list node.
         // Because we have splitted the element, emptyListItem is the first element in the list node.
         // i.e. insert newBlock before ul or ol whose first element is emptyListItem
         insertNodeBefore(newBlock, listNode);
         removeNode(emptyListItem);
@@ skipping 27 matching lines @@
         return false;
 
     if (!isStartOfParagraph(caret) || !isEndOfParagraph(caret))
         return false;
 
     VisiblePosition previous(caret.previous(CannotCrossEditingBoundary));
     // Only move forward if there's nothing before the caret, or if there's unquoted content before it.
     if (enclosingNodeOfType(previous.deepEquivalent(), &isMailBlockquote))
         return false;
 
-    RefPtr<Node> br = createBreakElement(document());
+    RefPtrWillBeRawPtr<Node> br = createBreakElement(document());
     // We want to replace this quoted paragraph with an unquoted one, so insert a br
     // to hold the caret before the highest blockquote.
     insertNodeBefore(br, highestBlockquote);
     VisiblePosition atBR(positionBeforeNode(br.get()));
     // If the br we inserted collapsed, for example foo<br><blockquote>...</blockquote>, insert
     // a second one.
     if (!isStartOfParagraph(atBR))
         insertNodeBefore(createBreakElement(document()), br);
     setEndingSelection(VisibleSelection(atBR, endingSelection().isDirectional()));
 
@@ skipping 76 matching lines @@
     }
 
     if (result.isNull() || !editableRootForPosition(result))
         result = original;
 
     return result;
 }
 
 // Splits the tree parent by parent until we reach the specified ancestor. We use VisiblePositions
 // to determine if the split is necessary. Returns the last split node.
-PassRefPtr<Node> CompositeEditCommand::splitTreeToNode(Node* start, Node* end, bool shouldSplitAncestor)
+PassRefPtrWillBeRawPtr<Node> CompositeEditCommand::splitTreeToNode(Node* start, Node* end, bool shouldSplitAncestor)
 {
     ASSERT(start);
     ASSERT(end);
     ASSERT(start != end);
 
     if (shouldSplitAncestor && end->parentNode())
         end = end->parentNode();
     if (!start->isDescendantOf(end))
         return end;
 
-    RefPtr<Node> endNode = end;
-    RefPtr<Node> node;
+    RefPtrWillBeRawPtr<Node> endNode = end;
+    RefPtrWillBeRawPtr<Node> node = nullptr;
     for (node = start; node->parentNode() != endNode; node = node->parentNode()) {
         if (!node->parentNode()->isElementNode())
             break;
         // Do not split a node when doing so introduces an empty node.
         VisiblePosition positionInParent(firstPositionInNode(node->parentNode()));
         VisiblePosition positionInNode(firstPositionInOrBeforeNode(node.get()));
         if (positionInParent != positionInNode)
             splitElement(toElement(node->parentNode()), node);
     }
 
     return node.release();
 }
 
 PassRefPtrWillBeRawPtr<Element> createBlockPlaceholderElement(Document& document)
 {
     return document.createElement(brTag, false);
 }
 
+void CompositeEditCommand::trace(Visitor* visitor)
+{
+    visitor->trace(m_commands);
+    visitor->trace(m_composition);
+    EditCommand::trace(visitor);
+}
+
 } // namespace WebCore