[mojo] Get rid of Skia type converters

skia/public/interfaces/bitmap.mojom

 // Copyright 2015 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.
 
 // This file contains structures used to represent SkBitmaps in Mojo.
 module skia;
 
-// Mirror of SkColorType.
-enum ColorType {
-  UNKNOWN,
-  ALPHA_8,
-  RGB_565,
-  ARGB_4444,
-  RGBA_8888,
-  BGRA_8888,
-  INDEX_8,
-  GRAY_8,
-};
-
-// Mirror of SkAlphaType.
-enum AlphaType {
-  UNKNOWN,
-  ALPHA_TYPE_OPAQUE,
-  PREMUL,
-  UNPREMUL,
-};
-
-// Mirror of SkColorProfileType.
-enum ColorProfileType {
-  LINEAR,
-  SRGB,
-};
-
-struct Bitmap {
-  ColorType color_type;
-  AlphaType alpha_type;
-  ColorProfileType profile_type;
-
-  uint32 width;
-  uint32 height;
-
-  array<uint8> pixel_data;
-};
+[Native=True]

[yzshen1, 2016/02/05 17:48:26]

nit: please consider using [Native] (it equals to [Native=true] 't' in lower
case).

Currently the generator interprets True as a string and because it is not empty
it evaluates to true. That means [Native=False] achieves the same purpose.

We probably should tighten the rules. :)

+struct Bitmap;