DevTools: Do not push to frontend messages from worker while it is alive

Source/core/frame/FrameConsole.h

Index: Source/core/frame/FrameConsole.h
diff --git a/Source/core/frame/FrameConsole.h b/Source/core/frame/FrameConsole.h
index 31a5d12052644356e914e0c7128566b45928ed40..1f72ff35d4e282742c6a9536c2abf89b15e10609 100644
--- a/Source/core/frame/FrameConsole.h
+++ b/Source/core/frame/FrameConsole.h
@@ -40,6 +40,7 @@ namespace blink {
 class ConsoleMessage;
 class FrameHost;
 class ScriptCallStack;
+class WorkerGlobalScopeProxy;
 
 // FrameConsole takes per-frame console messages and routes them up through the FrameHost to the ChromeClient and Inspector.
 // It's meant as an abstraction around ChromeClient calls and the way that Blink core/ can add messages to the console.
@@ -48,6 +49,8 @@ public:
     static PassOwnPtr<FrameConsole> create(LocalFrame& frame) { return adoptPtr(new FrameConsole(frame)); }
 
     void addMessage(PassRefPtrWillBeRawPtr<ConsoleMessage>);
+    void workerGlobalScopeTerminated(WorkerGlobalScopeProxy*);
+
     static String formatStackTraceString(const String& originalMessage, PassRefPtrWillBeRawPtr<ScriptCallStack>);
 
     static void mute();