Enable the WebIDL [Exposed] annotation on an interface's members.

Source/core/dom/ExecutionContext.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2012 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 47 matching lines @@
 
 class ExecutionContext
     : public LifecycleContext<ExecutionContext>
     , public WillBeHeapSupplementable<ExecutionContext> {
 public:
     virtual void trace(Visitor*) OVERRIDE;
 
     // Delegating to ExecutionContextClient
     bool isDocument() const { return m_client && m_client->isDocument(); }
     bool isWorkerGlobalScope() const { return m_client && m_client->isWorkerGlobalScope(); }
+    bool isDedicatedWorkerGlobalScope() const { return m_client && m_client->isDedicatedWorkerGlobalScope(); }
+    bool isSharedWorkerGlobalScope() const { return m_client && m_client->isSharedWorkerGlobalScope(); }
+    bool isServiceWorkerGlobalScope() const { return m_client && m_client->isServiceWorkerGlobalScope(); }
     bool isJSExecutionForbidden() { return m_client && m_client->isJSExecutionForbidden(); }
     SecurityOrigin* securityOrigin() const;
     ContentSecurityPolicy* contentSecurityPolicy() const;
     const KURL& url() const;
     KURL completeURL(const String& url) const;
     void disableEval(const String& errorMessage);
     LocalDOMWindow* executingWindow() const;
     String userAgent(const KURL&) const;
     void postTask(PassOwnPtr<ExecutionContextTask>);
     double timerAlignmentInterval() const;
@@ skipping 91 matching lines @@
 
     // The location of this member is important; to make sure contextDestroyed() notification on
     // ExecutionContext's members (notably m_timeouts) is called before they are destructed,
     // m_lifecycleNotifer should be placed *after* such members.
     OwnPtr<ContextLifecycleNotifier> m_lifecycleNotifier;
 };
 
 } // namespace blink
 
 #endif // ExecutionContext_h