Revert 257524 "Move IsStringASCII/UTF8 to base namespace."

trunk/src/media/cdm/json_web_key.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 "media/cdm/json_web_key.h"
 
 #include "base/base64.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/logging.h"
@@ skipping 103 matching lines @@
     DVLOG(1) << "Invalid '" << kKeyTag << "' value: " << encoded_key;
     return false;
   }
 
   // Add the decoded key ID and the decoded key to the list.
   *jwk_key = std::make_pair(raw_key_id, raw_key);
   return true;
 }
 
 bool ExtractKeysFromJWKSet(const std::string& jwk_set, KeyIdAndKeyPairs* keys) {
-  if (!base::IsStringASCII(jwk_set))
+  if (!IsStringASCII(jwk_set))
     return false;
 
   scoped_ptr<base::Value> root(base::JSONReader().ReadToValue(jwk_set));
   if (!root.get() || root->GetType() != base::Value::TYPE_DICTIONARY)
     return false;
 
   // Locate the set from the dictionary.
   base::DictionaryValue* dictionary =
       static_cast<base::DictionaryValue*>(root.get());
   base::ListValue* list_val = NULL;
@@ skipping 20 matching lines @@
     }
     local_keys.push_back(key_pair);
   }
 
   // Successfully processed all JWKs in the set.
   keys->swap(local_keys);
   return true;
 }
 
 }  // namespace media