[cros] RlzValueStore implementation for ChromeOS.

rlz/test/rlz_test_helpers.h

Index: rlz/test/rlz_test_helpers.h
diff --git a/rlz/test/rlz_test_helpers.h b/rlz/test/rlz_test_helpers.h
index 66bb525304181855f2305680a6f61cca70ccd976..6ca606db4581c213fa2f70d9f376b700219477d1 100644
--- a/rlz/test/rlz_test_helpers.h
+++ b/rlz/test/rlz_test_helpers.h
@@ -10,19 +10,30 @@
 #include "base/compiler_specific.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_CHROMEOS)
 #include "base/scoped_temp_dir.h"
 #endif
+#if defined(OS_CHROMEOS)
+#include "base/message_loop.h"
+#include "base/threading/thread.h"
+#endif
 
 class RlzLibTestNoMachineState : public ::testing::Test {
  protected:
+#if defined(OS_CHROMEOS)
+  RlzLibTestNoMachineState();
+#endif
   virtual void SetUp() OVERRIDE;
   virtual void TearDown() OVERRIDE;
 
 
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_CHROMEOS)
  ScopedTempDir temp_dir_;
 #endif
+#if defined(OS_CHROMEOS)
+  base::Thread pref_store_io_thread_;
+  MessageLoop message_loop_;
+#endif
 };
 
 class RlzLibTestBase : public RlzLibTestNoMachineState {