Implement navigator.hardwareConcurrency

Source/core/frame/Navigator.h

Index: Source/core/frame/Navigator.h
diff --git a/Source/core/frame/Navigator.h b/Source/core/frame/Navigator.h
index 42df704805e6bc69f8e734f16bd20a3c6e16ff8a..5e7daa79abd8bb23532c4ad0dda16c9f4d42d48b 100644
--- a/Source/core/frame/Navigator.h
+++ b/Source/core/frame/Navigator.h
@@ -22,6 +22,7 @@
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/frame/DOMWindowProperty.h"
+#include "core/frame/NavigatorCPU.h"
 #include "core/frame/NavigatorID.h"
 #include "core/frame/NavigatorLanguage.h"
 #include "core/frame/NavigatorOnLine.h"
@@ -41,7 +42,7 @@ class PluginData;
 
 typedef int ExceptionCode;
 
-class Navigator FINAL : public RefCountedWillBeGarbageCollectedFinalized<Navigator>, public NavigatorID, public NavigatorLanguage, public NavigatorOnLine, public ScriptWrappable, public DOMWindowProperty, public WillBeHeapSupplementable<Navigator> {
+class Navigator FINAL : public RefCountedWillBeGarbageCollectedFinalized<Navigator>, public NavigatorCPU, public NavigatorID, public NavigatorLanguage, public NavigatorOnLine, public ScriptWrappable, public DOMWindowProperty, public WillBeHeapSupplementable<Navigator> {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Navigator);
 public:
     static PassRefPtrWillBeRawPtr<Navigator> create(LocalFrame* frame)