ScriptState::contextIsEmpty shouldn't return true for a context whose global object is detached

Source/bindings/core/v8/ScheduledAction.cpp

 /*
  * Copyright (C) 2007-2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 65 matching lines @@
         if (!frame->script().canExecuteScripts(AboutToExecuteScript))
             return;
         execute(frame);
     } else {
         execute(toWorkerGlobalScope(context));
     }
 }
 
 void ScheduledAction::execute(LocalFrame* frame)
 {
-    if (m_scriptState->contextIsEmpty())
+    if (m_scriptState->contextIsValue())
         return;
 
     TRACE_EVENT0("v8", "ScheduledAction::execute");
     ScriptState::Scope scope(m_scriptState.get());
     if (!m_function.isEmpty()) {
         Vector<v8::Handle<v8::Value> > info;
         createLocalHandlesForArgs(&info);
         frame->script().callFunction(m_function.newLocal(m_scriptState->isolate()), m_scriptState->context()->Global(), info.size(), info.data());
     } else {
         frame->script().executeScriptAndReturnValue(m_scriptState->context(), ScriptSourceCode(m_code));
     }
 
     // The frame might be invalid at this point because JavaScript could have released it.
 }
 
 void ScheduledAction::execute(WorkerGlobalScope* worker)
 {
     ASSERT(worker->thread()->isCurrentThread());
-    ASSERT(!m_scriptState->contextIsEmpty());
+    ASSERT(!m_scriptState->contextIsValue());
     if (!m_function.isEmpty()) {
         ScriptState::Scope scope(m_scriptState.get());
         Vector<v8::Handle<v8::Value> > info;
         createLocalHandlesForArgs(&info);
         V8ScriptRunner::callFunction(m_function.newLocal(m_scriptState->isolate()), worker, m_scriptState->context()->Global(), info.size(), info.data(), m_scriptState->isolate());
     } else {
         worker->script()->evaluate(m_code);
     }
 }
 
 void ScheduledAction::createLocalHandlesForArgs(Vector<v8::Handle<v8::Value> >* handles)
 {
     handles->reserveCapacity(m_info.Size());
     for (size_t i = 0; i < m_info.Size(); ++i)
         handles->append(m_info.Get(i));
 }
 
 } // namespace blink