Rendering text to a canvas in a frame-less 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 222 matching lines @@
     CreatedByCreateElement = SynchronousCustomElements,
     // https://html.spec.whatwg.org/#create-an-element-for-the-token
     CreatedByFragmentParser = CreatedByParser | AsynchronousCustomElements,
 };
 
 using DocumentClassFlags = unsigned char;
 
 class CORE_EXPORT Document : public ContainerNode, public TreeScope, public SecurityContext, public ExecutionContext, public Supplementable<Document> {
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(Document);
+    friend class Settings;
 public:
     static Document* create(const DocumentInit& initializer = DocumentInit())
     {
         return new Document(initializer);
     }
     ~Document() override;
 
     MediaQueryMatcher& mediaQueryMatcher();
 
     void mediaQueryAffectingValueChanged();
@@ skipping 1174 matching lines @@
 
     int m_nodeCount;
 
     bool m_mayContainV0Shadow = false;
 
     Member<SnapCoordinator> m_snapCoordinator;
 
     bool m_visibilityWasLogged;
 
     Member<PropertyRegistry> m_propertyRegistry;
+
+    std::unique_ptr<Settings> m_settings;

[Justin Novosad, 2016/09/12 18:44:59]

You should call this m_defaultSettings

[zakerinasab, 2016/09/12 19:47:33]

Done.

 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT Supplement<Document>;
 
 inline bool Document::shouldOverrideLegacyDescription(ViewportDescription::Type origin) const
 {
     // The different (legacy) meta tags have different priorities based on the type
     // regardless of which order they appear in the DOM. The priority is given by the
     // ViewportDescription::Type enum.
     return origin >= m_legacyViewportDescription.type;
@@ skipping 29 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