Type conversion fixes, components/ edition.

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 325 matching lines @@
       device_info_worker_pool_->GetSequencedTaskRunnerWithShutdownBehavior(
           device_info_worker_pool_->GetSequenceToken(),
           base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN);
 }
 
 // static
 base::FilePath VolumeMountWatcherWin::DriveNumberToFilePath(int drive_number) {
   if (drive_number < 0 || drive_number > 25)
     return base::FilePath();
   base::string16 path(L"_:\\");
-  path[0] = L'A' + drive_number;
+  path[0] = static_cast<base::char16>('A' + drive_number);
   return base::FilePath(path);
 }
 
 // In order to get all the weak pointers created on the UI thread, and doing
 // synchronous Windows calls in the worker pool, this kicks off a chain of
 // events which will
 // a) Enumerate attached devices
 // b) Create weak pointers for which to send completion signals from
 // c) Retrieve metadata on the volumes and then
 // d) Notify that metadata to listeners.
@@ skipping 190 matching lines @@
     callback.Run(StorageMonitor::EJECT_FAILURE);
     return;
   }
 
   task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&EjectDeviceInThreadPool, device, callback, task_runner_, 0));
 }
 
 }  // namespace storage_monitor