Move IsStringUTF8/ASCII to base namespace

sync/util/cryptographer_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/util/cryptographer.h"
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_util.h"
@@ skipping 171 matching lines @@
     EXPECT_EQ(original.SerializeAsString(), decrypted.SerializeAsString());
   }
 }
 
 TEST_F(CryptographerTest, Bootstrap) {
   KeyParams params = {"localhost", "dummy", "dummy"};
   cryptographer_.AddKey(params);
 
   std::string token;
   EXPECT_TRUE(cryptographer_.GetBootstrapToken(&token));
-  EXPECT_TRUE(IsStringUTF8(token));
+  EXPECT_TRUE(base::IsStringUTF8(token));
 
   Cryptographer other_cryptographer(&encryptor_);
   other_cryptographer.Bootstrap(token);
   EXPECT_TRUE(other_cryptographer.is_ready());
 
   const char secret[] = "secret";
   sync_pb::EncryptedData encrypted;
   EXPECT_TRUE(other_cryptographer.EncryptString(secret, &encrypted));
   EXPECT_TRUE(cryptographer_.CanDecryptUsingDefaultKey(encrypted));
 }
 
 }  // namespace syncer