[WIP]Implement Blink side changes for navigator.language(s) support for workers.

Source/core/workers/WorkerLanguageTasks.cpp

+// Copyright 2014 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 "config.h"
+
+#include "core/workers/WorkerLanguageTasks.h"
+
+#include "core/events/Event.h"
+#include "core/workers/WorkerGlobalScope.h"
+#include "core/workers/WorkerNavigator.h"
+
+
+namespace blink {
+
+PassOwnPtr<WorkerThreadSetUserPreferredLanguagesTask> WorkerThreadSetUserPreferredLanguagesTask::create(const Vector<String>& languages)
+{
+    return adoptPtr(new WorkerThreadSetUserPreferredLanguagesTask(languages));
+}
+
+void WorkerThreadSetUserPreferredLanguagesTask::performTask(ExecutionContext *context)
+{
+    WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(context);
+
+    // Get the navigator and set the default language & user preferred languages
+    workerGlobalScope->navigator()->setUserPreferredLanguagesForWorkers(m_languages);
+}
+
+WorkerThreadSetUserPreferredLanguagesTask::WorkerThreadSetUserPreferredLanguagesTask(const Vector<String>& languages)
+{
+    ASSERT(languages.size() > 0);
+    m_languages = languages;
+}
+
+//----
+
+PassOwnPtr<WorkerThreadAcceptLanguagesChangedTask> WorkerThreadAcceptLanguagesChangedTask::create()
+{
+    return adoptPtr(new WorkerThreadAcceptLanguagesChangedTask());
+}
+
+void WorkerThreadAcceptLanguagesChangedTask::performTask(ExecutionContext *context)
+{
+    WorkerGlobalScope* workerGlobalScope = toWorkerGlobalScope(context);
+
+    // Get the navigator and set the default language & user preferred langauges
+    workerGlobalScope->navigator()->setLanguagesChanged();
+    workerGlobalScope->dispatchEvent(Event::create(EventTypeNames::languagechange));
+}
+
+WorkerThreadAcceptLanguagesChangedTask::WorkerThreadAcceptLanguagesChangedTask()
+{
+}
+
+}