Allow various font weights in gfx.

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>
 
 #include "build/build_config.h"
 #include "third_party/skia/include/core/SkFontLCDConfig.h"
+#include "ui/gfx/font.h"
 #include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 
 // A collection of parameters describing how text should be rendered on Linux.
 struct GFX_EXPORT FontRenderParams {
   FontRenderParams();
   FontRenderParams(const FontRenderParams& other);
   ~FontRenderParams();
 
@@ skipping 58 matching lines @@
     return families.empty() && pixel_size <= 0 && point_size <= 0 && style < 0;
   }
 
   // Requested font families, or empty if unset.
   std::vector<std::string> families;
 
   // Font size in pixels or points, or 0 if unset.
   int pixel_size;
   int point_size;
 
-  // gfx::Font::FontStyle bit field, or -1 if unset.
+  // Font::FontStyle bit field, or -1 if unset.
   int style;
 
+  // Weight of the font. Weight::NORMAL by default.
+  Font::Weight weight;
+
   // The device scale factor of the display, or 0 if unset.
   float device_scale_factor;
 };
 
 // Returns the appropriate parameters for rendering the font described by
 // |query|. If |family_out| is non-NULL, it will be updated to contain the
 // recommended font family from |query.families|.
 GFX_EXPORT FontRenderParams GetFontRenderParams(
     const FontRenderParamsQuery& query,
     std::string* family_out);
@@ skipping 10 matching lines @@
 
 // Sets the device scale factor for FontRenderParams to decide
 // if it should enable subpixel positioning.
 GFX_EXPORT void SetFontRenderParamsDeviceScaleFactor(
     float device_scale_factor);
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_FONT_RENDER_PARAMS_H_