DevTools: do not enable debugger for pages where script execution is prohibited

Source/core/inspector/WorkerDebuggerAgent.cpp

Index: Source/core/inspector/WorkerDebuggerAgent.cpp
diff --git a/Source/core/inspector/WorkerDebuggerAgent.cpp b/Source/core/inspector/WorkerDebuggerAgent.cpp
index d4abe3f7da2b97163f76d67d3600413853bfdbf0..b73411a99df2f4d2cad330452332191d8d36f6d4 100644
--- a/Source/core/inspector/WorkerDebuggerAgent.cpp
+++ b/Source/core/inspector/WorkerDebuggerAgent.cpp
@@ -89,9 +89,10 @@ void WorkerDebuggerAgent::interruptAndDispatchInspectorCommands()
     scriptDebugServer().interruptAndRun(adoptPtr(new RunInspectorCommandsTask(m_inspectedWorkerGlobalScope->thread())));
 }
 
-void WorkerDebuggerAgent::startListeningScriptDebugServer()
+bool WorkerDebuggerAgent::startListeningScriptDebugServer()
 {
     scriptDebugServer().addListener(this);
+    return true;
 }
 
 void WorkerDebuggerAgent::stopListeningScriptDebugServer()