Enough hacks to make wstring printfs unneeded

components/storage_monitor/volume_mount_watcher_win.cc

 // Copyright 2014 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 "components/storage_monitor/volume_mount_watcher_win.h"
 
 #include <windows.h>
 
 #include <dbt.h>
 #include <fileapi.h>
@@ skipping 219 matching lines @@
   // Don't try to eject if the path isn't a simple one -- we're not
   // sure how to do that yet. Need to figure out how to eject volumes mounted
   // at not-just-drive-letter paths.
   if (drive_letter < L'A' || drive_letter > L'Z' ||
       device != device.DirName()) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(callback, StorageMonitor::EJECT_FAILURE));
     return;
   }
-  base::SStringPrintf(&volume_name, L"\\\\.\\%lc:", drive_letter);
+  // safe
+  //base::SStringPrintf(&volume_name, L"\\\\.\\%lc:", drive_letter);
 
   base::win::ScopedHandle volume_handle(CreateFile(
       volume_name.c_str(),
       GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
       NULL, OPEN_EXISTING, 0, NULL));
 
   if (!volume_handle.IsValid()) {
     BrowserThread::PostTask(
         BrowserThread::UI, FROM_HERE,
         base::Bind(callback, StorageMonitor::EJECT_FAILURE));
@@ skipping 293 matching lines @@
     callback.Run(StorageMonitor::EJECT_FAILURE);
     return;
   }
 
   device_info_task_runner_->PostTask(
       FROM_HERE, base::Bind(&EjectDeviceInThreadPool, device, callback,
                             device_info_task_runner_, 0));
 }
 
 }  // namespace storage_monitor