Move StartsWith[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 d69930b2e3bc215a5ee06573896ec7d68b007550..abf8541f67398d252f3ebe3f07811543b8974ae1 100644
--- a/remoting/protocol/me2me_host_authenticator_factory.cc
+++ b/remoting/protocol/me2me_host_authenticator_factory.cc
@@ -129,7 +129,7 @@ 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 (!base::IsStringASCII(remote_jid) ||
-      !StartsWithASCII(remote_jid, remote_jid_prefix + '/', false)) {
+      !base::StartsWithASCII(remote_jid, remote_jid_prefix + '/', false)) {
     LOG(ERROR) << "Rejecting incoming connection from " << remote_jid;
     return make_scoped_ptr(new RejectingAuthenticator());
   }