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

content/browser/geolocation/wifi_data_provider_win.cc

 // Copyright (c) 2010 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.
 
 // Windows Vista uses the Native Wifi (WLAN) API for accessing WiFi cards. See
 // http://msdn.microsoft.com/en-us/library/ms705945(VS.85).aspx. Windows XP
 // Service Pack 3 (and Windows XP Service Pack 2, if upgraded with a hot fix)
 // also support a limited version of the WLAN API. See
 // http://msdn.microsoft.com/en-us/library/bb204766.aspx. The WLAN API uses
 // wlanapi.h, which is not part of the SDK used by Gears, so is replicated
@@ skipping 599 matching lines @@
   return buffer != NULL;
 }
 
 bool GetSystemDirectory(base::string16* path) {
   DCHECK(path);
   // Return value includes terminating NULL.
   int buffer_size = ::GetSystemDirectory(NULL, 0);
   if (buffer_size == 0) {
     return false;
   }
-  scoped_ptr<char16[]> buffer(new char16[buffer_size]);
+  scoped_ptr<base::char16[]> buffer(new base::char16[buffer_size]);
 
   // Return value excludes terminating NULL.
   int characters_written = ::GetSystemDirectory(buffer.get(), buffer_size);
   if (characters_written == 0) {
     return false;
   }
   DCHECK_EQ(buffer_size - 1, characters_written);
 
   path->assign(buffer.get(), characters_written);
 
   if (*path->rbegin() != L'\\') {
     path->append(L"\\");
   }
   DCHECK_EQ(L'\\', *path->rbegin());
   return true;
 }
 }  // namespace
 
 }  // namespace content