[Cleanup] Remove StringPrintf from global namespace

chrome/browser/history/history_unittest.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.
 
 // History unit tests come in two flavors:
 //
 // 1. The more complicated style is that the unit test creates a full history
 //    service. This spawns a background thread for the history backend, and
 //    all communication is asynchronous. This is useful for testing more
 //    complicated things or end-to-end behavior.
@@ skipping 112 matching lines @@
     backend_->Init(std::string(), false);
     db_ = backend_->db_.get();
     DCHECK(in_mem_backend_.get()) << "Mem backend should have been set by "
         "HistoryBackend::Init";
   }
 
   void CreateDBVersion(int version) {
     base::FilePath data_path;
     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &data_path));
     data_path = data_path.AppendASCII("History");
-    data_path = data_path.AppendASCII(StringPrintf("history.%d.sql", version));
+    data_path =
+          data_path.AppendASCII(base::StringPrintf("history.%d.sql", version));
     ASSERT_NO_FATAL_FAILURE(
         ExecuteSQLScript(data_path, history_dir_.Append(
             chrome::kHistoryFilename)));
   }
 
   // testing::Test
   virtual void SetUp() {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     history_dir_ = temp_dir_.path().AppendASCII("HistoryBackendDBTest");
     ASSERT_TRUE(file_util::CreateDirectory(history_dir_));
@@ skipping 1432 matching lines @@
   ASSERT_EQ(1u, results.size());
   EXPECT_EQ(url, results[0]->GetURL());
   EXPECT_EQ(segment_id, results[0]->GetID());
   EXPECT_EQ(title, results[0]->GetTitle());
   STLDeleteElements(&results);
 }
 
 }  // namespace
 
 }  // namespace history