Add copy and assignment to FundamentalValue and StringValue.

chrome/browser/chromeos/settings/system_settings_provider.h

Index: chrome/browser/chromeos/settings/system_settings_provider.h
diff --git a/chrome/browser/chromeos/settings/system_settings_provider.h b/chrome/browser/chromeos/settings/system_settings_provider.h
index 578a1c57b5568cd38fc63ddb03fa94c27d67dcd4..ef7c174b69c23fd0e508e5f912c85c8580de896d 100644
--- a/chrome/browser/chromeos/settings/system_settings_provider.h
+++ b/chrome/browser/chromeos/settings/system_settings_provider.h
@@ -14,7 +14,7 @@
 #include "third_party/icu/public/i18n/unicode/timezone.h"
 
 namespace base {
-class Value;
+class StringValue;
 }
 
 namespace chromeos {
@@ -39,7 +39,7 @@ class SystemSettingsProvider : public CrosSettingsProvider,
   virtual void DoSet(const std::string& path,
                      const base::Value& in_value) OVERRIDE;
 
-  scoped_ptr<base::Value> timezone_value_;
+  scoped_ptr<base::StringValue> timezone_value_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemSettingsProvider);
 };