Move IsStringUTF8/ASCII to base namespace

remoting/protocol/me2me_host_authenticator_factory.cc

Index: remoting/protocol/me2me_host_authenticator_factory.cc
diff --git a/remoting/protocol/me2me_host_authenticator_factory.cc b/remoting/protocol/me2me_host_authenticator_factory.cc
index 7e407c828e89084a7f345ad26b4b4896ed3ff227..30c6419c734d304540a8fbfaa9fee36407125328 100644
--- a/remoting/protocol/me2me_host_authenticator_factory.cc
+++ b/remoting/protocol/me2me_host_authenticator_factory.cc
@@ -141,7 +141,7 @@ scoped_ptr<Authenticator> Me2MeHostAuthenticatorFactory::CreateAuthenticator(
 
   // Verify that the client's jid is an ASCII string, and then check that the
   // client JID has the expected prefix. Comparison is case insensitive.
-  if (!IsStringASCII(remote_jid) ||
+  if (!base::IsStringASCII(remote_jid) ||
       !StartsWithASCII(remote_jid, remote_jid_prefix + '/', false)) {
     LOG(ERROR) << "Rejecting incoming connection from " << remote_jid;
     return scoped_ptr<Authenticator>(new RejectingAuthenticator());