[Cleanup] Remove StringPrintf from global namespace

chrome/browser/download/download_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 <sstream>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 2706 matching lines @@
 
   // Download the same url several times and expect that all downloaded files
   // after the zero-th contain a deduplication counter.
   for (int index = 0; index < 5; ++index) {
     DownloadAndWait(browser(), url);
     EXPECT_TRUE(browser()->window()->IsDownloadShelfVisible());
     content::DownloadItem* item = manager->GetDownload(index);
     ASSERT_TRUE(item);
     ASSERT_TRUE(item->IsComplete());
     base::FilePath full_path(item->GetFullPath());
-    EXPECT_EQ(std::string("a_zip_file") + (index == 0 ? std::string(".zip") :
-                                           StringPrintf(" (%d).zip", index)),
+    EXPECT_EQ(std::string("a_zip_file") +
+        (index == 0 ? std::string(".zip") :
+                      base::StringPrintf(" (%d).zip", index)),
               full_path.BaseName().AsUTF8Unsafe());
     ASSERT_TRUE(file_util::PathExists(full_path));
     ASSERT_TRUE(VerifyFile(full_path, origin_contents, origin_contents.size()));
   }
 }
 
 // Test that the entire download pipeline handles unicode correctly.
 IN_PROC_BROWSER_TEST_F(DownloadTest, DownloadTest_CrazyFilenames) {
   const wchar_t* kCrazyFilenames[] = {
     L"a_file_name.zip",
@@ skipping 183 matching lines @@
   scoped_ptr<content::DownloadTestObserver> observer(
       DangerousDownloadWaiter(
           browser(), 1,
           content::DownloadTestObserver::ON_DANGEROUS_DOWNLOAD_DENY));
   ui_test_utils::NavigateToURL(browser(), url);
   observer->WaitForFinished();
   EXPECT_EQ(1u, observer->NumDownloadsSeenInState(DownloadItem::CANCELLED));
   EXPECT_EQ(1u, observer->NumDangerousDownloadsSeen());
   EXPECT_FALSE(browser()->window()->IsDownloadShelfVisible());
 }