[Experimental Framework] Make the OriginTrialContext a member of ExecutionContext

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 72 matching lines @@
 class ConsoleMessage;
 class ContextFeatures;
 class CustomElementMicrotaskRunQueue;
 class CustomElementRegistrationContext;
 class DOMImplementation;
 class DOMWindow;
 class DocumentFragment;
 class DocumentLoader;
 class DocumentMarkerController;
 class DocumentNameCollection;
+class DocumentOriginTrialContext;
 class DocumentParser;
 class DocumentState;
 class DocumentType;
 class DocumentVisibilityObserver;
 class Element;
 class ElementDataCache;
 class ElementRegistrationOptions;
 class Event;
 class EventFactoryBase;
 class EventListener;
@@ skipping 30 matching lines @@
 class LocalFrame;
 class Location;
 class MainThreadTaskRunner;
 class MediaQueryListListener;
 class MediaQueryMatcher;
 class NodeFilter;
 class NodeIntersectionObserverData;
 class NodeIterator;
 class NthIndexCache;
 class OriginAccessEntry;
+class OriginTrialContext;
 class Page;
 class PlatformMouseEvent;
 class ProcessingInstruction;
 class QualifiedName;
 class Range;
 class LayoutView;
 class ResourceFetcher;
 class SVGDocumentExtensions;
 class SVGUseElement;
 class ScriptRunner;
@@ skipping 1002 matching lines @@
 
     void setHoverNode(PassRefPtrWillBeRawPtr<Node>);
 
     using EventFactorySet = HashSet<OwnPtr<EventFactoryBase>>;
     static EventFactorySet& eventFactories();
 
     void setNthIndexCache(NthIndexCache* nthIndexCache) { ASSERT(!m_nthIndexCache || !nthIndexCache); m_nthIndexCache = nthIndexCache; }
 
     const OriginAccessEntry& accessEntryFromURL();
 
+    OriginTrialContext* originTrialContext() override;
+
     DocumentLifecycle m_lifecycle;
 
     bool m_hasNodesWithPlaceholderStyle;
     bool m_evaluateMediaQueriesOnStyleRecalc;
 
     // If we do ignore the pending stylesheet count, then we need to add a boolean
     // to track that this happened so that we can do a full repaint when the stylesheets
     // do eventually load.
     PendingSheetLayout m_pendingSheetLayout;
 
@@ skipping 220 matching lines @@
 
     OriginsUsingFeatures::Value m_originsUsingFeaturesValue;
 
     ClientHintsPreferences m_clientHintsPreferences;
 
     PersistentWillBeMember<CanvasFontCache> m_canvasFontCache;
 
     PersistentWillBeMember<IntersectionObserverController> m_intersectionObserverController;
     PersistentWillBeMember<NodeIntersectionObserverData> m_intersectionObserverData;
 
+    OwnPtr<DocumentOriginTrialContext> m_originTrialContext;

[jbroman, 2016/02/29 20:41:53]

nit: Why not just make this a plain member of Document? Then you wouldn't need
the extra heap allocation (the originTrailContext override would be "return
&m_originTrialContext;").

It looks like it's only sizeof(Document*) large anyhow.

     int m_nodeCount;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT WillBeHeapSupplement<Document>;
 
 inline bool Document::shouldOverrideLegacyDescription(ViewportDescription::Type origin)
 {
     // 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.
@@ skipping 30 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