[Cleanup] Remove StringPrintf from global namespace

content/test/layout_browsertest.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 "content/test/layout_browsertest.h"
 
 #include <sstream>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 122 matching lines @@
 void InProcessBrowserLayoutTest::RunLayoutTest(
     const std::string& test_case_file_name) {
   GURL url = net::FilePathToFileURL(
       layout_test_dir_.AppendASCII(test_case_file_name));
   RunLayoutTestInternal(test_case_file_name, url);
 }
 
 void InProcessBrowserLayoutTest::RunHttpLayoutTest(
     const std::string& test_case_file_name) {
   DCHECK(test_http_server_.get());
-  GURL url(StringPrintf(
+  GURL url(base::StringPrintf(
       "http://127.0.0.1:%d/%s/%s", port_, test_case_dir_.MaybeAsASCII().c_str(),
       test_case_file_name.c_str()));
   RunLayoutTestInternal(test_case_file_name, url);
 }
 
 void InProcessBrowserLayoutTest::RunLayoutTestInternal(
     const std::string& test_case_file_name, const GURL& url) {
   std::stringstream result;
   scoped_ptr<WebKitTestResultPrinter> printer(
       new WebKitTestResultPrinter(&result, NULL));
@@ skipping 44 matching lines @@
   EXPECT_TRUE(file_util::CreateNewTempDirectory(FILE_PATH_LITERAL(""), &cwd));
   base::FilePath expected_filename = cwd.Append(
       FILE_PATH_LITERAL("expected.txt"));
   base::FilePath actual_filename = cwd.Append(FILE_PATH_LITERAL("actual.txt"));
   EXPECT_NE(-1, file_util::WriteFile(expected_filename,
                                      expected.c_str(),
                                      expected.size()));
   EXPECT_NE(-1, file_util::WriteFile(actual_filename,
                                      actual.c_str(),
                                      actual.size()));
-  return StringPrintf("Wrote %"PRFilePath" %"PRFilePath,
-                      expected_filename.value().c_str(),
-                      actual_filename.value().c_str());
+  return base::StringPrintf("Wrote %"PRFilePath" %"PRFilePath,
+                            expected_filename.value().c_str(),
+                            actual_filename.value().c_str());
 }
 
 }  // namespace content