Move legacyCreateTypeface to SkFontStyle.

components/font_service/public/interfaces/font_service.mojom

 // Copyright 2014 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.
 
 module font_service;
 
-enum TypefaceStyle {
-  NORMAL = 0,
-  BOLD = 0x01,
-  ITALIC = 0x02,
-  BOLD_ITALIC = 0x03
+enum TypefaceSlant {
+  ROMAN = 0,
+  ITALIC = 1,
+};
+
+struct TypefaceStyle {
+  uint16 weight;
+  uint8 width;
+  TypefaceSlant slant;
 };
 
 // A reference to specific font on the font service.
 struct FontIdentity {
   uint32 id;
   int32 ttc_index;
   // TODO(erg): So the string is supposed to be a path. However, the current
   // chrome code goes out of its way to send this to the renderer process, and
   // it is passed to blink, even though the openStream() IPC in chrome uses the
   // id number instead. Do more investigation about what we need to do to plug
   // this system path leak.
   string str_representation;
 };
 
 // Loads and resolves fonts.
 //
 // We still need to load fonts from within a sandboxed process. We set
 // up a service to match fonts and load them,
 interface FontService {
   // Returns the best match for |family_name| and |style|. On error, returns a
   // null |identity|.
   MatchFamilyName(string family_name, TypefaceStyle style) =>
       (FontIdentity? identity, string family_name, TypefaceStyle style);
 
   // Returns a handle to the raw font specified by |id_number|.
   OpenStream(uint32 id_number) => (handle font_handle);
 };