[mojo] Get rid of Skia type converters

skia/skia_mojo_bindings.gyp

+# 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.
+
+{
+  'targets': [
+    {
+      'target_name': 'skia_mojo_bindings',
+      'type': 'static_library',
+      # The optimize: 'max' scattered throughout are particularly
+      # important when compiled by MSVC 2013, which seems
+      # to mis-link-time-compile code that's built with
+      # different optimization levels. http://crbug.com/543583
+      'variables': {
+        'mojom_typemaps': [
+          'public/interfaces/skia.typemap',
+        ],
+        'mojom_typemap_dependencies': [
+          '<(DEPTH)/skia/skia.gyp:skia',
+          '<(DEPTH)/ui/gfx/ipc/gfx_ipc.gyp:gfx_ipc',
+        ],
+        'optimize': 'max',
+      },
+      'dependencies': [
+        '../skia/skia.gyp:skia',
+        '../base/base.gyp:base',
+      ],
+      'includes': [
+        '../third_party/mojo/mojom_bindings_generator.gypi',
+      ],
+      'sources': [
+        # Note: file list duplicated in GN build.
+        'public/interfaces/bitmap.mojom',
+      ],
+    },
+  ],
+}