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

Source/core/workers/WorkerNavigator.h

Index: Source/core/workers/WorkerNavigator.h
diff --git a/Source/core/workers/WorkerNavigator.h b/Source/core/workers/WorkerNavigator.h
index 79fccd13099582da93ef69a685baf53bcffdbf8d..654787baca30247825eaf3ce0191c8f5f92240e3 100644
--- a/Source/core/workers/WorkerNavigator.h
+++ b/Source/core/workers/WorkerNavigator.h
@@ -29,6 +29,7 @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/frame/NavigatorCPU.h"
 #include "core/frame/NavigatorID.h"
+#include "core/frame/NavigatorLanguage.h"
 #include "core/frame/NavigatorOnLine.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
@@ -38,7 +39,8 @@
 
 namespace blink {
 
-class WorkerNavigator FINAL : public RefCountedWillBeGarbageCollectedFinalized<WorkerNavigator>, public ScriptWrappable, public NavigatorCPU, public NavigatorID, public NavigatorOnLine, public WillBeHeapSupplementable<WorkerNavigator> {
+
+class WorkerNavigator FINAL : public RefCountedWillBeGarbageCollectedFinalized<WorkerNavigator>, public ScriptWrappable, public NavigatorCPU, public NavigatorID, public NavigatorOnLine, public NavigatorLanguage, public WillBeHeapSupplementable<WorkerNavigator> {
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(WorkerNavigator);
 public:
@@ -50,12 +52,20 @@ public:
 
     virtual String userAgent() const OVERRIDE;
 
+    void setUserPreferredLanguagesForWorkers(const Vector<String>&);
+
+    virtual AtomicString language() OVERRIDE;
+
+    virtual Vector<String> languages() OVERRIDE;
+
     void trace(Visitor*);
 
 private:
     explicit WorkerNavigator(const String&);
 
     String m_userAgent;
+
+    Vector<String> m_userPreferredLanguages;
 };
 
 } // namespace blink