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

Source/core/dom/ExecutionContextClient.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 31 matching lines @@
 class ScriptCallStack;
 class ScriptState;
 class SecurityContext;
 
 class ExecutionContextClient {
 public:
     virtual void postTask(PassOwnPtr<ExecutionContextTask>) = 0; // Executes the task on context's thread asynchronously.
 
     virtual bool isDocument() const { return false; }
     virtual bool isWorkerGlobalScope() const { return false; }
+    virtual bool isDedicatedWorkerGlobalScope() const { return false; }
+    virtual bool isSharedWorkerGlobalScope() const { return false; }
+    virtual bool isServiceWorkerGlobalScope() const { return false; }
     virtual bool isJSExecutionForbidden() const = 0;
     virtual LocalDOMWindow* executingWindow() { return 0; }
     virtual String userAgent(const KURL&) const = 0;
     virtual void disableEval(const String& errorMessage) = 0;
     virtual SecurityContext& securityContext() = 0;
     virtual void addMessage(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, ScriptState*) = 0;
     virtual EventTarget* errorEventTarget() = 0;
     virtual void logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtrWillBeRawPtr<ScriptCallStack>) = 0;
     virtual double timerAlignmentInterval() const = 0;
     virtual void didUpdateSecurityOrigin() = 0;
 
     virtual void tasksWereSuspended() { }
     virtual void tasksWereResumed() { }
 
     void addConsoleMessage(MessageSource source, MessageLevel level, const String& message, const String& sourceURL, unsigned lineNumber) { addMessage(source, level, message, sourceURL, lineNumber, 0); }
     void addConsoleMessage(MessageSource source, MessageLevel level, const String& message, ScriptState* state = 0) { addMessage(source, level, message, String(), 0, state); }
 
 protected:
     virtual ~ExecutionContextClient() { }
 
 };
 
 
 } // namespace
 
 #endif