[Experimental Framework] Make the OriginTrialContext a member of ExecutionContext

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

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index c28883b6e1d4dfc0a840bf953fbed139ce409d9d..4d44b7227cdab77d6f6da134d8048907980e0fff 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -90,6 +90,7 @@ class DocumentFragment;
 class DocumentLoader;
 class DocumentMarkerController;
 class DocumentNameCollection;
+class DocumentOriginTrialContext;
 class DocumentParser;
 class DocumentState;
 class DocumentType;
@@ -140,6 +141,7 @@ class NodeIntersectionObserverData;
 class NodeIterator;
 class NthIndexCache;
 class OriginAccessEntry;
+class OriginTrialContext;
 class Page;
 class PlatformMouseEvent;
 class ProcessingInstruction;
@@ -1162,6 +1164,8 @@ private:
 
     const OriginAccessEntry& accessEntryFromURL();
 
+    OriginTrialContext* originTrialContext() override;
+
     DocumentLifecycle m_lifecycle;
 
     bool m_hasNodesWithPlaceholderStyle;
@@ -1402,6 +1406,7 @@ private:
     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;
 };