[Cleanup] Remove StringPrintf from global namespace

google_apis/gaia/oauth_request_signer.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 "google_apis/gaia/oauth_request_signer.h"
 
 #include <cctype>
 #include <cstddef>
 #include <cstdlib>
 #include <cstring>
@@ skipping 61 matching lines @@
     case OAuthRequestSigner::PLAINTEXT_SIGNATURE:
       return "PLAINTEXT";
   }
   NOTREACHED();
   return std::string();
 }
 
 std::string BuildBaseString(const GURL& request_base_url,
                             OAuthRequestSigner::HttpMethod http_method,
                             const std::string& base_parameters) {
-  return StringPrintf("%s&%s&%s",
-                      HttpMethodName(http_method).c_str(),
-                      OAuthRequestSigner::Encode(
-                          request_base_url.spec()).c_str(),
-                      OAuthRequestSigner::Encode(
-                          base_parameters).c_str());
+  return base::StringPrintf("%s&%s&%s",
+                            HttpMethodName(http_method).c_str(),
+                            OAuthRequestSigner::Encode(
+                                request_base_url.spec()).c_str(),
+                            OAuthRequestSigner::Encode(
+                                base_parameters).c_str());
 }
 
 std::string BuildBaseStringParameters(
     const OAuthRequestSigner::Parameters& parameters) {
   std::string result = "";
   OAuthRequestSigner::Parameters::const_iterator cursor;
   OAuthRequestSigner::Parameters::const_iterator limit;
   bool first = true;
   for (cursor = parameters.begin(), limit = parameters.end();
        cursor != limit;
@@ skipping 343 matching lines @@
     std::string signed_text = "OAuth ";
     bool first = true;
     for (Parameters::const_iterator param = parameters.begin();
          param != parameters.end();
          ++param) {
       if (first)
         first = false;
       else
         signed_text += ", ";
       signed_text +=
-          StringPrintf("%s=\"%s\"",
-                       OAuthRequestSigner::Encode(param->first).c_str(),
-                       OAuthRequestSigner::Encode(param->second).c_str());
+          base::StringPrintf(
+              "%s=\"%s\"",
+              OAuthRequestSigner::Encode(param->first).c_str(),
+              OAuthRequestSigner::Encode(param->second).c_str());
     }
     *signed_text_return = signed_text;
   }
   return is_signed;
 }