Rename buffer_types_traits.{cc,h} to match normal conventions.

ui/gfx/mojo/buffer_types_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_BUFFER_TYPES_TRAITS_H_
-#define UI_GFX_MOJO_BUFFER_TYPES_TRAITS_H_
+#ifndef UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
+#define UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_
 
 #include "ui/gfx/buffer_types.h"
 #include "ui/gfx/mojo/buffer_types.mojom.h"
 
 namespace mojo {
 
 template <>
 struct EnumTraits<gfx::mojom::BufferFormat, gfx::BufferFormat> {
   static gfx::mojom::BufferFormat ToMojom(gfx::BufferFormat format) {
     switch (format) {
@@ skipping 252 matching lines @@
   }
   static const gfx::NativePixmapHandle& native_pixmap_handle(
       const gfx::GpuMemoryBufferHandle& handle);
   static mojo::ScopedHandle mach_port(const gfx::GpuMemoryBufferHandle& handle);
   static bool Read(gfx::mojom::GpuMemoryBufferHandleDataView data,
                    gfx::GpuMemoryBufferHandle* handle);
 };
 
 }  // namespace mojo
 
-#endif  // UI_GFX_MOJO_BUFFER_TYPES_TRAITS_H_
+#endif  // UI_GFX_MOJO_BUFFER_TYPES_STRUCT_TRAITS_H_