Fix unit test to allow repeated successful runs by avoiding a function static variable in tests.

ppapi/shared_impl/ppapi_globals.h

Index: ppapi/shared_impl/ppapi_globals.h
diff --git a/ppapi/shared_impl/ppapi_globals.h b/ppapi/shared_impl/ppapi_globals.h
index 00fb9b16e12ef8e1f9151dca5172a71866fd4ab4..e95cf48b2392def80cbf9ab4b59b130b54ebe9df 100644
--- a/ppapi/shared_impl/ppapi_globals.h
+++ b/ppapi/shared_impl/ppapi_globals.h
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
 #include "base/threading/thread_local.h"  // For testing purposes only.
 #include "ppapi/c/dev/ppb_console_dev.h"
 #include "ppapi/c/pp_instance.h"
@@ -126,6 +127,8 @@ class PPAPI_SHARED_EXPORT PpapiGlobals {
 
   static PpapiGlobals* ppapi_globals_;
 
+  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
+
   DISALLOW_COPY_AND_ASSIGN(PpapiGlobals);
 };