Move some Element specific code from Node::detach to Element::detach.

Source/core/css/invalidation/StyleInvalidator.cpp

 
 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "core/css/invalidation/StyleInvalidator.h"
 
 #include "core/css/invalidation/DescendantInvalidationSet.h"
@@ skipping 50 matching lines @@
 }
 
 StyleInvalidator::InvalidationList& StyleInvalidator::ensurePendingInvalidationList(Element& element)
 {
     PendingInvalidationMap::AddResult addResult = m_pendingInvalidationMap.add(&element, nullptr);
     if (addResult.isNewEntry)
         addResult.storedValue->value = adoptPtrWillBeNoop(new InvalidationList);
     return *addResult.storedValue->value;
 }
 
-void StyleInvalidator::clearInvalidation(Node& node)
+void StyleInvalidator::clearInvalidation(Element& element)
 {
-    if (node.isElementNode() && node.needsStyleInvalidation())
-        m_pendingInvalidationMap.remove(toElement(&node));
+    if (!element.needsStyleInvalidation())
+        return;
+    m_pendingInvalidationMap.remove(&element);
+    element.clearNeedsStyleInvalidation();
 }
 
 void StyleInvalidator::clearPendingInvalidations()
 {
     m_pendingInvalidationMap.clear();
 }
 
 StyleInvalidator::StyleInvalidator()
 {
     s_tracingEnabled = TRACE_EVENT_API_GET_CATEGORY_ENABLED(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.invalidationTracking"));
@@ skipping 111 matching lines @@
 }
 
 DEFINE_TRACE(StyleInvalidator)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_pendingInvalidationMap);
 #endif
 }
 
 } // namespace blink