Move deferred commit logic from WebViewImpl to Document.

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)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 739 matching lines @@
 
     // "body element" as defined by HTML5 (https://html.spec.whatwg.org/multipage/dom.html#the-body-element-2).
     // That is, the first body or frameset child of the document element.
     HTMLElement* body() const;
 
     // "HTML body element" as defined by CSSOM View spec (http://dev.w3.org/csswg/cssom-view/#the-html-body-element).
     // That is, the first body child of the document element.
     HTMLBodyElement* firstBodyElement() const;
 
     void setBody(HTMLElement*, ExceptionState&);
+    void willInsertBody();
 
     HTMLHeadElement* head() const;
 
     // Decide which element is to define the viewport's overflow policy. If |rootStyle| is set, use
     // that as the style for the root element, rather than obtaining it on our own. The reason for
     // this is that style may not have been associated with the elements yet - in which case it may
     // have been calculated on the fly (without associating it with the actual element) somewhere.
     Element* viewportDefiningElement(const ComputedStyle* rootStyle = nullptr) const;
 
     DocumentMarkerController& markers() const { return *m_markers; }
@@ skipping 333 matching lines @@
     bool dirtyElementsForLayerUpdate();
 
     void updateUseShadowTreesIfNeeded();
     void evaluateMediaQueryListIfNeeded();
 
     void updateStyle();
     void notifyLayoutTreeOfSubtreeChanges();
 
     void detachParser();
 
+    void beginLifecycleUpdatesIfRenderingReady();
+
     bool isDocument() const final { return true; }
 
     void childrenChanged(const ChildrenChange&) override;
 
     String nodeName() const final;
     NodeType getNodeType() const final;
     bool childTypeAllowed(NodeType) const final;
     Node* cloneNode(bool deep) final;
     void cloneDataFromDocument(const Document&);
     bool isSecureContextImpl(String* errorMessage, const SecureContextCheck priviligeContextCheck) const;
@@ skipping 307 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