Add tests for trace wrappers

third_party/WebKit/Source/core/testing/DeathAwareScriptWrappable.cpp

Index: third_party/WebKit/Source/core/testing/DeathAwareScriptWrappable.cpp
diff --git a/third_party/WebKit/Source/core/frame/NavigatorCPU.h b/third_party/WebKit/Source/core/testing/DeathAwareScriptWrappable.cpp
similarity index 56%
copy from third_party/WebKit/Source/core/frame/NavigatorCPU.h
copy to third_party/WebKit/Source/core/testing/DeathAwareScriptWrappable.cpp
index 84d4f58244d3d832e20d703fd8a9d09cf344b303..79bbc3713aa8743070bb56268713f19a4cd598d2 100644
--- a/third_party/WebKit/Source/core/frame/NavigatorCPU.h
+++ b/third_party/WebKit/Source/core/testing/DeathAwareScriptWrappable.cpp
@@ -2,16 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NavigatorCPU_h
-#define NavigatorCPU_h
+#include "core/testing/DeathAwareScriptWrappable.h"
 
 namespace blink {
 
-class NavigatorCPU {
-public:
-    unsigned hardwareConcurrency() const;
-};
+DeathAwareScriptWrappable* DeathAwareScriptWrappable::s_instance;
+bool DeathAwareScriptWrappable::s_hasDied;
 
 } // namespace blink
-
-#endif // NavigatorCPU_h