[Cleanup] Remove StringPrintf from global namespace

chrome/browser/extensions/api/push_messaging/push_messaging_canary_test.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 <string>
 
 #include "base/string16.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/api/push_messaging/sync_setup_helper.h"
@@ skipping 75 matching lines @@
     sync_setup_helper_.reset();
   }
 
   void StartRunningTest() {
     // Get the credentials from the setup helper.
     const std::string& client_id = sync_setup_helper_->client_id();
     const std::string& client_secret = sync_setup_helper_->client_secret();
     const std::string& refresh_token = sync_setup_helper_->refresh_token();
 
     // Construct a JS string to pass in the parameters and start the test.
-    std::string script_string = StringPrintf(
+    std::string script_string = base::StringPrintf(
         "startTestWithCredentials('%s', '%s', '%s');",
         client_id.c_str(), client_secret.c_str(), refresh_token.c_str());
     string16 script16 = UTF8ToUTF16(script_string);
 
     browser()->tab_strip_model()->GetActiveWebContents()->GetRenderViewHost()->
         ExecuteJavascriptInWebFrame(string16(), script16);
   }
 
  protected:
   // Override InProcessBrowserTest. Change behavior of the default host
@@ skipping 68 matching lines @@
   DVLOG(1) << "push_canary app done loading";
 
   StartRunningTest();
 
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 
   LOG(INFO) << "Exiting Push Messaging Canary test";
 }
 
 }  // namespace extensions