Track lastTextNode during rebuildLayoutTree.

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
@@ skipping 1399 matching lines @@
 
     return documentElement();
   }
 
   return body();
 }
 
 // We use HashMap::set over HashMap::add here as we want to
 // replace the ComputedStyle but not the Node if the Node is
 // already present.
-void Document::addStyleReattachData(const Node& node,
-                                    StyleReattachData& styleReattachData) {
+void Document::addNonAttachedStyle(const Node& node,
+                                   RefPtr<ComputedStyle> computedStyle) {
   DCHECK(node.isElementNode() || node.isTextNode());
-  m_styleReattachDataMap.set(&node, styleReattachData);
+  m_nonAttachedStyle.set(&node, computedStyle);
 }
 
-StyleReattachData Document::getStyleReattachData(const Node& node) const {
-  return m_styleReattachDataMap.at(&node);
+ComputedStyle* Document::getNonAttachedStyle(const Node& node) const {
+  return m_nonAttachedStyle.at(&node);
 }
 
 /*
  * Performs three operations:
  *  1. Convert control characters to spaces
  *  2. Trim leading and trailing spaces
  *  3. Collapse internal whitespace.
  */
 template <typename CharacterType>
 static inline String canonicalizedTitle(Document* document,
@@ skipping 662 matching lines @@
       documentElement->recalcStyle(change);
     if (documentElement->needsReattachLayoutTree() ||
         documentElement->childNeedsReattachLayoutTree())
       documentElement->rebuildLayoutTree();
   }
 
   view()->recalcOverflowAfterStyleChange();
 
   // Only retain the HashMap for the duration of StyleRecalc and
   // LayoutTreeConstruction.
-  m_styleReattachDataMap.clear();
+  m_nonAttachedStyle.clear();
   clearChildNeedsStyleRecalc();
   clearChildNeedsReattachLayoutTree();
 
   resolver.clearStyleSharingList();
 
   DCHECK(!needsStyleRecalc());
   DCHECK(!childNeedsStyleRecalc());
   DCHECK(!needsReattachLayoutTree());
   DCHECK(!childNeedsReattachLayoutTree());
   DCHECK(inStyleRecalc());
   DCHECK_EQ(styleResolver(), &resolver);
-  DCHECK(m_styleReattachDataMap.isEmpty());
+  DCHECK(m_nonAttachedStyle.isEmpty());
   m_lifecycle.advanceTo(DocumentLifecycle::StyleClean);
   if (shouldRecordStats) {
     TRACE_EVENT_END2("blink,blink_style", "Document::updateStyle",
                      "resolverAccessCount",
                      styleEngine().styleForElementCount() - initialElementCount,
                      "counters", styleEngine().stats()->toTracedValue());
   } else {
     TRACE_EVENT_END1(
         "blink,blink_style", "Document::updateStyle", "resolverAccessCount",
         styleEngine().styleForElementCount() - initialElementCount);
@@ skipping 4470 matching lines @@
   visitor->trace(m_userActionElements);
   visitor->trace(m_svgExtensions);
   visitor->trace(m_timeline);
   visitor->trace(m_compositorPendingAnimations);
   visitor->trace(m_contextDocument);
   visitor->trace(m_canvasFontCache);
   visitor->trace(m_intersectionObserverController);
   visitor->trace(m_snapCoordinator);
   visitor->trace(m_resizeObserverController);
   visitor->trace(m_propertyRegistry);
-  visitor->trace(m_styleReattachDataMap);
+  visitor->trace(m_nonAttachedStyle);
   visitor->trace(m_networkStateObserver);
   Supplementable<Document>::trace(visitor);
   TreeScope::trace(visitor);
   ContainerNode::trace(visitor);
   ExecutionContext::trace(visitor);
   SecurityContext::trace(visitor);
   SynchronousMutationNotifier::trace(visitor);
 }
 
 void Document::recordDeferredLoadReason(WouldLoadReason reason) {
@@ skipping 44 matching lines @@
 }
 
 void showLiveDocumentInstances() {
   WeakDocumentSet& set = liveDocumentSet();
   fprintf(stderr, "There are %u documents currently alive:\n", set.size());
   for (blink::Document* document : set)
     fprintf(stderr, "- Document %p URL: %s\n", document,
             document->url().getString().utf8().data());
 }
 #endif