Update uses of UTF conversions in chrome_frame/, chromeos/, components/ to use the base:: namespace.

components/policy/core/browser/configuration_policy_pref_store.cc

Index: components/policy/core/browser/configuration_policy_pref_store.cc
diff --git a/components/policy/core/browser/configuration_policy_pref_store.cc b/components/policy/core/browser/configuration_policy_pref_store.cc
index 60670fb825d66ce60992dfd7b12b1b93e78807b4..0c720ff107285756181ea89be92feb713d49abc2 100644
--- a/components/policy/core/browser/configuration_policy_pref_store.cc
+++ b/components/policy/core/browser/configuration_policy_pref_store.cc
@@ -26,7 +26,7 @@ namespace {
 void LogErrors(PolicyErrorMap* errors) {
   PolicyErrorMap::const_iterator iter;
   for (iter = errors->begin(); iter != errors->end(); ++iter) {
-    base::string16 policy = ASCIIToUTF16(iter->first);
+    base::string16 policy = base::ASCIIToUTF16(iter->first);
     DLOG(WARNING) << "Policy " << policy << ": " << iter->second;
   }
 }