Oilpan: tidy up reference to the Document's "CSS target".

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.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 428 matching lines @@
     , m_readyState(Complete)
     , m_isParsing(false)
     , m_gotoAnchorNeededAfterStylesheetsLoad(false)
     , m_containsValidityStyleRules(false)
     , m_updateFocusAppearanceRestoresSelection(false)
     , m_containsPlugins(false)
     , m_ignoreDestructiveWriteCount(0)
     , m_titleSetExplicitly(false)
     , m_markers(adoptPtrWillBeNoop(new DocumentMarkerController))
     , m_updateFocusAppearanceTimer(this, &Document::updateFocusAppearanceTimerFired)
-    , m_cssTarget(0)
+    , m_cssTarget(nullptr)
     , m_loadEventProgress(LoadEventNotRun)
     , m_startTime(currentTime())
     , m_scriptRunner(ScriptRunner::create(this))
     , m_xmlVersion("1.0")
     , m_xmlStandalone(StandaloneUnspecified)
     , m_hasXMLDeclaration(0)
     , m_designMode(inherit)
     , m_hasAnnotatedRegions(false)
     , m_annotatedRegionsDirty(false)
     , m_useSecureKeyboardEntryWhenActive(false)
@@ skipping 3214 matching lines @@
     if (!focusChangeBlocked && frameHost())
         frameHost()->chrome().focusedNodeChanged(m_focusedElement.get());
 
 SetFocusedElementDone:
     updateRenderTreeIfNeeded();
     if (LocalFrame* frame = this->frame())
         frame->selection().didChangeFocus();
     return !focusChangeBlocked;
 }
 
-void Document::setCSSTarget(Element* n)
+void Document::setCSSTarget(Element* newTarget)
 {
     if (m_cssTarget)
         m_cssTarget->didAffectSelector(AffectedSelectorTarget);
-    m_cssTarget = n;
-    if (n)
-        n->didAffectSelector(AffectedSelectorTarget);
+    m_cssTarget = newTarget;
+    if (m_cssTarget)
+        m_cssTarget->didAffectSelector(AffectedSelectorTarget);
 }
 
 void Document::registerNodeList(const LiveNodeListBase* list)
 {
 #if ENABLE(OILPAN)
     m_nodeLists[list->invalidationType()].add(list);
 #else
     m_nodeListCounts[list->invalidationType()]++;
 #endif
     if (list->isRootedAtDocument())
@@ skipping 2072 matching lines @@
     visitor->trace(m_importsController);
     visitor->trace(m_docType);
     visitor->trace(m_implementation);
     visitor->trace(m_autofocusElement);
     visitor->trace(m_focusedElement);
     visitor->trace(m_hoverNode);
     visitor->trace(m_activeHoverElement);
     visitor->trace(m_documentElement);
     visitor->trace(m_titleElement);
     visitor->trace(m_markers);
+    visitor->trace(m_cssTarget);
     visitor->trace(m_currentScriptStack);
     visitor->trace(m_scriptRunner);
     visitor->trace(m_transformSourceDocument);
     visitor->trace(m_listsInvalidatedAtDocument);
 #if ENABLE(OILPAN)
     for (int i = 0; i < numNodeListInvalidationTypes; ++i)
         visitor->trace(m_nodeLists[i]);
 #endif
     visitor->trace(m_cssCanvasElements);
     visitor->trace(m_topLayerElements);
@@ skipping 19 matching lines @@
     visitor->trace(m_compositorPendingAnimations);
     visitor->trace(m_contextDocument);
     visitor->registerWeakMembers<Document, &Document::clearWeakMembers>(this);
     DocumentSupplementable::trace(visitor);
     TreeScope::trace(visitor);
     ContainerNode::trace(visitor);
     ExecutionContext::trace(visitor);
 }
 
 } // namespace WebCore