[Cleanup] Remove StringPrintf from global namespace

chrome_frame/test/test_with_web_server.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_frame/test/test_with_web_server.h"
 
 #include "base/base_paths.h"
 #include "base/file_util.h"
 #include "base/file_version_info.h"
 #include "base/files/memory_mapped_file.h"
@@ skipping 1000 matching lines @@
     }
 
     virtual size_t ContentLength() const {
       DCHECK(!is_post_);
       return sizeof(kHtml) - 1;
     }
 
     virtual bool GetCustomHeaders(std::string* headers) const {
       if (!is_post_)
         return false;
-      *headers = StringPrintf(
+      *headers = base::StringPrintf(
           "HTTP/1.1 200 OK\r\n"
           "Content-Disposition: attachment;filename=\"test.txt\"\r\n"
           "Content-Type: application/text\r\n"
           "Connection: close\r\n"
           "Content-Length: %i\r\n\r\n", sizeof(kText) - 1);
       return true;
     }
 
     virtual bool Matches(const test_server::Request& r) const {
       bool match = __super::Matches(r);
@@ skipping 58 matching lines @@
 // This test loads a large page and ensures that the full page contents are
 // actually loaded via a self-validating HTML page. This is done due to a bug
 // whereby the middle of the response stream would sometimes be truncated when
 // loading a CF document. See http://crbug.com/178421 for details.
 TEST_F(ChromeFrameTestWithWebServer, FullTabModeIE_LargePageLoad) {
   const wchar_t kLargePageLoadPage[] =
       L"chrome_frame_large_page.html";
 
   SimpleBrowserTest(IE, kLargePageLoadPage);
 }