[cros] RlzValueStore implementation for ChromeOS.

rlz/lib/rlz_value_store.h

Index: rlz/lib/rlz_value_store.h
diff --git a/rlz/lib/rlz_value_store.h b/rlz/lib/rlz_value_store.h
index ab7279ac64a9400f6c8f8959d1cb9dcf2256a031..807f10000f6c05127066da0b6dab3ffd29d54844 100644
--- a/rlz/lib/rlz_value_store.h
+++ b/rlz/lib/rlz_value_store.h
@@ -95,7 +95,12 @@ class ScopedRlzValueStoreLock {
   RlzValueStore* GetStore();
 
  private:
+#if defined(OS_WIN) || defined(OS_MACOSX)
+  // On ChromeOS, there is a singleton instance of RlzValueStore.
   scoped_ptr<RlzValueStore> store_;
+#elif defined(OS_CHROMEOS)
+  class RlzValueStoreChromeOS* store_;
+#endif
 #if defined(OS_WIN)
   LibMutex lock_;
 #elif defined(OS_MACOSX)
@@ -103,11 +108,15 @@ class ScopedRlzValueStoreLock {
 #endif
 };
 
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_CHROMEOS)
 namespace testing {
 // Prefix |directory| to the path where the RLZ data file lives, for tests.
 void SetRlzStoreDirectory(const FilePath& directory);
+}  // namespace testing
+#endif  // defined(OS_MACOSX) || defined(OS_CHROMEOS)
 
+#if defined(OS_MACOSX)
+namespace testing {
 // Returns the path of the plist file used as data store.
 std::string RlzPlistFilenameStr();
 }  // namespace testing