Update some uses of char16 to use the base:: namespace.

chrome/browser/usb/usb_device_handle.cc

 // Copyright (c) 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/usb/usb_device_handle.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 358 matching lines @@
   int size = libusb_get_string_descriptor(
       handle_, 0, 0,
       reinterpret_cast<unsigned char*>(&langid[0]), sizeof(langid));
   if (size < 0)
     return false;
 
   int language_count = (size - 2) / 2;
 
   for (int i = 1; i <= language_count; ++i) {
     // Get the string using language ID.
-    char16 text[256] = { 0 };
+    base::char16 text[256] = { 0 };
     size = libusb_get_string_descriptor(
         handle_, desc.iSerialNumber, langid[i],
         reinterpret_cast<unsigned char*>(&text[0]), sizeof(text));
     if (size <= 2)
       continue;
     if ((text[0] >> 8) != LIBUSB_DT_STRING)
       continue;
     if ((text[0] & 255) > size)
       continue;
 
@@ skipping 204 matching lines @@
   }
 
   // Attempt-release all the interfaces.
   // It will be retained until the transfer cancellation is finished.
   claimed_interfaces_.clear();
 
   // Cannot close device handle here. Need to wait for libusb_cancel_transfer to
   // finish.
   device_ = NULL;
 }