Don't terminate SharedWorker while loading the script.

content/worker/websharedworker_stub.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/worker/websharedworker_stub.h"
 
 #include "base/compiler_specific.h"
 #include "content/child/child_process.h"
 #include "content/child/child_thread.h"
 #include "content/child/fileapi/file_system_dispatcher.h"
@@ skipping 84 matching lines @@
   } else {
     // If two documents try to load a SharedWorker at the same time, the
     // WorkerMsg_Connect for one of the documents can come in before the
     // worker is started. Just queue up the connect and deliver it once the
     // worker starts.
     pending_channels_.push_back(channel);
   }
 }
 
 void WebSharedWorkerStub::OnTerminateWorkerContext() {
-  impl_->terminateWorkerContext();
-
+  running_ = false;
   // Call the client to make sure context exits.
   EnsureWorkerContextTerminates();
-  running_ = false;
+  // This may call "delete this" via WorkerScriptLoadFailed and Shutdown.
+  impl_->terminateWorkerContext();
 }
 
 void WebSharedWorkerStub::WorkerScriptLoaded() {
   running_ = true;
   // Process any pending connections.
   for (PendingChannelList::const_iterator iter = pending_channels_.begin();
        iter != pending_channels_.end();
        ++iter) {
     impl_->connect(*iter);
     WorkerThread::current()->Send(
         new WorkerHostMsg_WorkerConnected((*iter)->message_port_id(),
                                           route_id_));
   }
   pending_channels_.clear();
 }
 
 void WebSharedWorkerStub::WorkerScriptLoadFailed() {
   for (PendingChannelList::const_iterator iter = pending_channels_.begin();
        iter != pending_channels_.end();
        ++iter) {
     blink::WebMessagePortChannel* channel = *iter;
     channel->destroy();
   }
   pending_channels_.clear();
   Shutdown();
 }
 
 }  // namespace content