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

ppapi/shared_impl/ppb_gamepad_shared.h

 // Copyright (c) 2012 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.
 
 #ifndef PPAPI_SHARED_IMPL_PPB_GAMEPAD_SHARED_H_
 #define PPAPI_SHARED_IMPL_PPB_GAMEPAD_SHARED_H_
 
 #include "base/atomicops.h"
 #include "base/strings/string16.h"
 #include "ppapi/c/ppb_gamepad.h"
@@ skipping 10 matching lines @@
 // has some compile asserts to validate this.
 struct WebKitGamepad {
     static const size_t kIdLengthCap = 128;
     static const size_t kAxesLengthCap = 16;
     static const size_t kButtonsLengthCap = 32;
 
     // Is there a gamepad connected at this index?
     bool connected;
 
     // Device identifier (based on manufacturer, model, etc.).
-    char16 id[kIdLengthCap];
+    base::char16 id[kIdLengthCap];
 
     // Monotonically increasing value referring to when the data were last
     // updated.
     unsigned long long timestamp;
 
     // Number of valid entries in the axes array.
     unsigned axes_length;
 
     // Normalized values representing axes, in the range [-1..1].
     float axes[kAxesLengthCap];
@@ skipping 27 matching lines @@
 
 #pragma pack(pop)
 
 PPAPI_SHARED_EXPORT void ConvertWebKitGamepadData(
     const WebKitGamepads& webkit_data,
     PP_GamepadsSampleData* output_data);
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_PPB_GAMEPAD_SHARED_H_