Use correct IntToString variants in //chrome

chrome/browser/ui/webui/extensions/extension_settings_browsertest.cc

 // Copyright 2013 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/browser/ui/webui/extensions/extension_settings_browsertest.h"
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 161 matching lines @@
         extensions::NOTIFICATION_CRX_INSTALLER_DONE,
         content::Source<extensions::CrxInstaller>(installer.get()));
 
     installer->InstallCrx(crx_path);
 
     observer_->Wait();
   }
 
   size_t num_after = registry->enabled_extensions().size();
   if (num_before + 1 != num_after) {
-    VLOG(1) << "Num extensions before: " << base::IntToString(num_before)
-            << " num after: " << base::IntToString(num_after)
+    VLOG(1) << "Num extensions before: " << base::SizeTToString(num_before)
+            << " num after: " << base::SizeTToString(num_after)
             << " Installed extensions follow:";
 
     for (const scoped_refptr<const Extension>& extension :
          registry->enabled_extensions())
       VLOG(1) << "  " << extension->id();
 
     VLOG(1) << "Errors follow:";
     const std::vector<base::string16>* errors =
         ExtensionErrorReporter::GetInstance()->GetErrors();
     for (std::vector<base::string16>::const_iterator iter = errors->begin();
          iter != errors->end(); ++iter)
       VLOG(1) << *iter;
 
     return nullptr;
   }
 
   if (!observer_->WaitForExtensionViewsToLoad())
     return nullptr;
   return service->GetExtensionById(last_loaded_extension_id(), false);
 }