DevTools: Extract WorkerInspectorProxy interface from WorkerGlobalScopeProxy.

Source/core/workers/WorkerGlobalScopeProxy.h

Index: Source/core/workers/WorkerGlobalScopeProxy.h
diff --git a/Source/core/workers/WorkerGlobalScopeProxy.h b/Source/core/workers/WorkerGlobalScopeProxy.h
index 162dfb53dd766d7bc858c458ecf578100314516e..13bbe9c7722cbf3c5e35b3e9dce5fe3c89556de6 100644
--- a/Source/core/workers/WorkerGlobalScopeProxy.h
+++ b/Source/core/workers/WorkerGlobalScopeProxy.h
@@ -55,16 +55,6 @@ namespace blink {
         virtual bool hasPendingActivity() const = 0;
 
         virtual void workerObjectDestroyed() = 0;
-
-        class PageInspector {
-        public:
-            virtual ~PageInspector() { }
-            virtual void dispatchMessageFromWorker(const String&) = 0;
-        };
-        virtual void connectToInspector(PageInspector*) { }
-        virtual void disconnectFromInspector() { }
-        virtual void sendMessageToInspector(const String&) { }
-        virtual void writeTimelineStartedEvent(const String& sessionId) { }
     };
 
 } // namespace blink