[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..a55bef259449f26a014bca189437d979f78645ab 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -140,6 +140,7 @@ class NodeIntersectionObserverData;
 class NodeIterator;
 class NthIndexCache;
 class OriginAccessEntry;
+class OriginTrialContext;
 class Page;
 class PlatformMouseEvent;
 class ProcessingInstruction;
@@ -1080,6 +1081,7 @@ protected:
     ParserSynchronizationPolicy getParserSynchronizationPolicy() const { return m_parserSyncPolicy; }
 
 private:
+    friend class DocumentOriginTrialContextTest;
     friend class IgnoreDestructiveWriteCountIncrementer;
     friend class NthIndexCache;
 
@@ -1162,6 +1164,8 @@ private:
 
     const OriginAccessEntry& accessEntryFromURL();
 
+    PassOwnPtrWillBeRawPtr<OriginTrialContext> createOriginTrialContext() override;
+
     DocumentLifecycle m_lifecycle;
 
     bool m_hasNodesWithPlaceholderStyle;