workers: Rename WorkerThread to WorkerScript.

Source/core/workers/WorkerReportingProxy.h

Index: Source/core/workers/WorkerReportingProxy.h
diff --git a/Source/core/workers/WorkerReportingProxy.h b/Source/core/workers/WorkerReportingProxy.h
index 85e880654140531c24a92b6a02a4cf1c27594f8c..b09e767fd8af97e9a646bb3c6cb94e43ad6d65a6 100644
--- a/Source/core/workers/WorkerReportingProxy.h
+++ b/Source/core/workers/WorkerReportingProxy.h
@@ -61,10 +61,10 @@ public:
     // Invoked when close() is invoked on the worker context.
     virtual void workerGlobalScopeClosed() = 0;
 
-    // Invoked when the thread is stopped and WorkerGlobalScope is being
+    // Invoked when the WorkerScript is stopped and WorkerGlobalScope is being
     // destructed. (This is be the last method that is called on this
     // interface)
-    virtual void workerThreadTerminated() = 0;
+    virtual void workerScriptTerminated() = 0;
 
     // Invoked when the thread is about to be stopped and WorkerGlobalScope
     // is to be destructed. (When this is called it is guaranteed that