Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

chrome/browser/extensions/api/networking_private/networking_private_crypto.cc

 // Copyright 2013 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 "chrome/browser/extensions/api/networking_private/networking_private_crypto.h"
 
 #include <cert.h>
 #include <cryptohi.h>
 #include <keyhi.h>
 #include <keythi.h>
@@ skipping 110 matching lines @@
   // Something like evt_e161 001a11ffacdf
   char* common_name = CERT_GetCommonName(&cert->subject);
   if (!common_name) {
     LOG(ERROR) << "Certificate does not have common name.";
     return false;
   }
 
   std::string subject_name(common_name);
   PORT_Free(common_name);
   std::string translated_mac;
-  RemoveChars(connected_mac, ":", &translated_mac);
+  base::RemoveChars(connected_mac, ":", &translated_mac);
   if (!EndsWith(subject_name, translated_mac, false)) {
     LOG(ERROR) << "MAC addresses don't match.";
     return false;
   }
 
   // Make sure that the certificate matches the unsigned data presented.
   // Verify that the |signature| matches |data|.
   crypto::ScopedSECKEYPublicKey public_key(CERT_ExtractPublicKey(cert.get()));
   if (!public_key.get()) {
     LOG(ERROR) << "Unable to extract public key from certificate.";
@@ skipping 90 matching lines @@
                             encrypted_data.length());
   if (decrypted != SECSuccess) {
     LOG(ERROR) << "Error during decryption.";
     return false;
   }
   decrypted_output->assign(reinterpret_cast<char*>(rsa_output.get()),
                            output_length);
   return true;
 }