Don't force-update style and layout in Document::scrollingElement

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

 /*
  * 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, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 326 matching lines @@
   Node* importNode(Node* importedNode, bool deep, ExceptionState&);
   Element* createElementNS(const AtomicString& namespaceURI,
                            const AtomicString& qualifiedName,
                            ExceptionState&);
   Element* createElement(const QualifiedName&, CreateElementFlags);
 
   Element* elementFromPoint(int x, int y) const;
   HeapVector<Member<Element>> elementsFromPoint(int x, int y) const;
   Range* caretRangeFromPoint(int x, int y);
   Element* scrollingElement();
+  // When calling from C++ code, use this method. scrollingElement() is
+  // just for the web IDL implementation.
+  Element* scrollingElementInternal();

[wkorman, 2017/01/11 03:56:39]

Wondering if there is a better name, since isn't usually 'Internal' only used
for calling from within the containing class? Maybe something that implies
style/layout must already be clean. scrollingElementPostLayout?

[chrishtr, 2017/01/11 04:09:09]

Done.

 
   void addStyleReattachData(Node&, StyleReattachData&);
   StyleReattachData getStyleReattachData(Node&);
 
   String readyState() const;
 
   AtomicString characterSet() const { return Document::encodingName(); }
 
   AtomicString encodingName() const;
 
@@ skipping 1361 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h