Mojo C++ bindings: change the first template parameter of StructTraits and UnionTraits.

ui/gfx/mojo/accelerated_widget_struct_traits.h

 // Copyright 2016 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 UI_GFX_MOJO_ACCELERATED_WIDGET_STRUCT_TRAITS_H_
 #define UI_GFX_MOJO_ACCELERATED_WIDGET_STRUCT_TRAITS_H_
 
 #include "ui/gfx/mojo/accelerated_widget.mojom.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace mojo {
 
 template <>
-struct StructTraits<gfx::mojom::AcceleratedWidget, gfx::AcceleratedWidget> {
+struct StructTraits<gfx::mojom::AcceleratedWidgetDataView,
+                    gfx::AcceleratedWidget> {
   static uint64_t widget(const gfx::AcceleratedWidget& widget) {
 #if defined(OS_WIN) || defined(USE_OZONE) || defined(USE_X11)
 #if defined(OS_WIN)
     return reinterpret_cast<uint64_t>(widget);
 #else
     return static_cast<uint64_t>(widget);
 #endif
 #else
     NOTIMPLEMENTED();
     return 0;
@@ skipping 13 matching lines @@
     NOTIMPLEMENTED();
     *out = 0;
 #endif
     return true;
   }
 };
 
 }  // namespace mojo
 
 #endif  // UI_GFX_MOJO_ACCELERATED_WIDGET_STRUCT_TRAITS_H_