[Experimental Framework] Make the OriginTrialContext a member of ExecutionContext

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

Index: third_party/WebKit/Source/core/dom/ExecutionContext.h
diff --git a/third_party/WebKit/Source/core/dom/ExecutionContext.h b/third_party/WebKit/Source/core/dom/ExecutionContext.h
index acafd94fd9d5c1930c25f1a6fbb565d7345edc58..431e3b92659f57f0c98bfe4e43cee98396e09431 100644
--- a/third_party/WebKit/Source/core/dom/ExecutionContext.h
+++ b/third_party/WebKit/Source/core/dom/ExecutionContext.h
@@ -53,6 +53,8 @@ class EventQueue;
 class EventTarget;
 class ExecutionContextTask;
 class LocalDOMWindow;
+class OriginTrials;
+class OriginTrialContext;
 class PublicURLManager;
 class SecurityOrigin;
 class ScriptCallStack;
@@ -82,6 +84,7 @@ public:
 
     virtual bool isContextThread() const { return true; }
 
+    OriginTrials* originTrials();
     SecurityOrigin* securityOrigin();
     ContentSecurityPolicy* contentSecurityPolicy();
     const KURL& url() const;
@@ -170,6 +173,9 @@ private:
     bool dispatchErrorEvent(PassRefPtrWillBeRawPtr<ErrorEvent>, AccessControlStatus);
     void runSuspendableTasks();
 
+    // Override to enable experimental features through origin trials
+    virtual OriginTrialContext* originTrialContext() { return nullptr; }
+
 #if !ENABLE(OILPAN)
     virtual void refExecutionContext() = 0;
     virtual void derefExecutionContext() = 0;
@@ -197,6 +203,9 @@ private:
     bool m_isRunSuspendableTasksScheduled;
 
     ReferrerPolicy m_referrerPolicy;
+
+    // Experimental framework policy and cache
+    OwnPtr<OriginTrials> m_originTrials;
 };
 
 } // namespace blink