Worker: Remove cross-thread PostTask functions from WorkerLoaderProxy

third_party/WebKit/Source/core/workers/InProcessWorkerMessagingProxy.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 158 matching lines @@
   // exceptions should *always* be reported even if the thread is terminated.
   // This is intentionally different than the behavior in MessageWorkerTask,
   // because terminated workers no longer deliver messages (section 4.6 of the
   // WebWorker spec), but they do report exceptions.
 
   ErrorEvent* event =
       ErrorEvent::Create(error_message, location->Clone(), nullptr);
   if (worker_object_->DispatchEvent(event) != DispatchEventResult::kNotCanceled)
     return;
 
-  PostTaskToWorkerGlobalScope(
-      BLINK_FROM_HERE,
-      CrossThreadBind(&InProcessWorkerObjectProxy::ProcessUnhandledException,
-                      CrossThreadUnretained(worker_object_proxy_.get()),
-                      exception_id, CrossThreadUnretained(GetWorkerThread())));
+  // The HTML spec requires to queue an error event using the DOM manipulation
+  // task source.
+  // https://html.spec.whatwg.org/multipage/workers.html#runtime-script-errors-2
+  TaskRunnerHelper::Get(TaskType::kDOMManipulation, GetWorkerThread())
+      ->PostTask(BLINK_FROM_HERE,
+                 CrossThreadBind(
+                     &InProcessWorkerObjectProxy::ProcessUnhandledException,
+                     CrossThreadUnretained(worker_object_proxy_.get()),
+                     exception_id, CrossThreadUnretained(GetWorkerThread())));
 }
 
 void InProcessWorkerMessagingProxy::WorkerThreadCreated() {
   DCHECK(IsParentContextThread());
   ThreadedMessagingProxyBase::WorkerThreadCreated();
 
   // Worker initialization means a pending activity.
   worker_global_scope_has_pending_activity_ = true;
 
   DCHECK_EQ(0u, unconfirmed_message_count_);
@@ skipping 43 matching lines @@
 }
 
 bool InProcessWorkerMessagingProxy::HasPendingActivity() const {
   DCHECK(IsParentContextThread());
   if (AskedToTerminate())
     return false;
   return worker_global_scope_has_pending_activity_;
 }
 
 }  // namespace blink