[Cleanup] Remove StringPrintf from global namespace

chrome/browser/chromeos/login/default_user_images.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 "chrome/browser/chromeos/login/default_user_images.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
@@ skipping 58 matching lines @@
   IDS_LOGIN_DEFAULT_USER_DESC_32,
 };
 
 // Returns a string consisting of the prefix specified and the index of the
 // image if its valid.
 std::string GetDefaultImageString(int index, const std::string& prefix) {
   if (index < 0 || index >= kDefaultImagesCount) {
     NOTREACHED();
     return std::string();
   }
-  return StringPrintf("%s%d", prefix.c_str(), index);
+  return base::StringPrintf("%s%d", prefix.c_str(), index);
 }
 
 // Returns true if the string specified consists of the prefix and one of
 // the default images indices. Returns the index of the image in |image_id|
 // variable.
 bool IsDefaultImageString(const std::string& s,
                           const std::string& prefix,
                           int* image_id) {
   DCHECK(image_id);
   if (!StartsWithASCII(s, prefix, true))
@@ skipping 186 matching lines @@
 int GetDefaultImageHistogramValue(int index) {
   DCHECK(index >= 0 && index < kDefaultImagesCount);
   // Create a gap in histogram values for
   // [kHistogramImageFromCamera..kHistogramImageFromProfile] block to fit.
   if (index < kHistogramImageFromCamera)
     return index;
   return index + 6;
 }
 
 }  // namespace chromeos