Make GetCustomFontRenderParams() pass font style.

ui/gfx/font_render_params.h

 // 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.
 
 #ifndef UI_GFX_FONT_RENDER_PARAMS_H_
 #define UI_GFX_FONT_RENDER_PARAMS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 49 matching lines @@
 // Returns the system's default parameters for font rendering.
 GFX_EXPORT const FontRenderParams& GetDefaultFontRenderParams();
 
 // Returns the system's default parameters for WebKit font rendering.
 // TODO(derat): Rename to GetDefaultFontRenderParamsForWebContents().
 GFX_EXPORT const FontRenderParams& GetDefaultWebKitFontRenderParams();
 
 // Returns the appropriate parameters for rendering the font described by the
 // passed-in-arguments, any of which may be NULL. If |family_out| is non-NULL,
 // it will be updated to contain the recommended font family from |family_list|.
-// TODO(derat): Also accept the font style, so that its bold and italic states
-// can be passed to Fontconfig in the Linux implementation.
+// |style| optionally points to a bit field of Font::FontStyle values.
 GFX_EXPORT FontRenderParams GetCustomFontRenderParams(
     bool for_web_contents,
     const std::vector<std::string>* family_list,
     const int* pixel_size,
     const int* point_size,
+    const int* style,
     std::string* family_out);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_FONT_RENDER_PARAMS_H_