[Cleanup] Remove StringPrintf from global namespace

net/disk_cache/simple/simple_synchronous_entry.cc

 // Copyright (c) 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 "net/disk_cache/simple/simple_synchronous_entry.h"
 
 #include <algorithm>
 #include <cstring>
 #include <limits>
 
@@ skipping 23 matching lines @@
 using base::ReadPlatformFile;
 using base::TaskRunner;
 using base::Time;
 using base::TruncatePlatformFile;
 using base::WritePlatformFile;
 
 namespace {
 
 std::string GetFilenameForKeyAndIndex(const std::string& key, int index) {
   const std::string sha_hash = base::SHA1HashString(key);
-  return StringPrintf("%02x%02x%02x%02x%02x_%1d",
-                      implicit_cast<unsigned char>(sha_hash[0]),
-                      implicit_cast<unsigned char>(sha_hash[1]),
-                      implicit_cast<unsigned char>(sha_hash[2]),
-                      implicit_cast<unsigned char>(sha_hash[3]),
-                      implicit_cast<unsigned char>(sha_hash[4]), index);
+  return base::StringPrintf("%02x%02x%02x%02x%02x_%1d",
+                            implicit_cast<unsigned char>(sha_hash[0]),
+                            implicit_cast<unsigned char>(sha_hash[1]),
+                            implicit_cast<unsigned char>(sha_hash[2]),
+                            implicit_cast<unsigned char>(sha_hash[3]),
+                            implicit_cast<unsigned char>(sha_hash[4]), index);
 }
 
 int32 DataSizeFromKeyAndFileSize(size_t key_size, int64 file_size) {
   int64 data_size = file_size - key_size - sizeof(disk_cache::SimpleFileHeader);
   DCHECK_GE(implicit_cast<int64>(std::numeric_limits<int32>::max()), data_size);
   return data_size;
 }
 
 int64 FileOffsetFromDataOffset(size_t key_size, int data_offset) {
   const int64 headers_size = sizeof(disk_cache::SimpleFileHeader) +
@@ skipping 241 matching lines @@
       DLOG(WARNING) << "Could not write keys to new cache entry.";
       return false;
     }
   }
 
   initialized_ = true;
   return true;
 }
 
 }  // namespace disk_cache