Allow various font weights in gfx.

ui/gfx/platform_font_linux.h

Index: ui/gfx/platform_font_linux.h
diff --git a/ui/gfx/platform_font_linux.h b/ui/gfx/platform_font_linux.h
index 52c4bceb76e82e590d5cd4aaa158a19a29b5b4ad..bf8fe3c61188b8309526eadff9ba906f861220e5 100644
--- a/ui/gfx/platform_font_linux.h
+++ b/ui/gfx/platform_font_linux.h
@@ -41,8 +41,11 @@ class GFX_EXPORT PlatformFontLinux : public PlatformFont {
 #endif
 
   // Overridden from PlatformFont:
-  Font DeriveFont(int size_delta, int style) const override;
+  Font DeriveFont(int size_delta,
+                  int style,
+                  gfx::Font::Weight weight) const override;
   int GetHeight() override;
+  gfx::Font::Weight GetWeight() const override;
   int GetBaseline() override;
   int GetCapHeight() override;
   int GetExpectedTextWidth(int length) override;
@@ -58,18 +61,19 @@ class GFX_EXPORT PlatformFontLinux : public PlatformFont {
   PlatformFontLinux(const skia::RefPtr<SkTypeface>& typeface,
                     const std::string& family,
                     int size_pixels,
-                    int style,
+                    bool italic,
+                    gfx::Font::Weight weight,
                     const FontRenderParams& params);
   ~PlatformFontLinux() override;
 
   // Initializes this object based on the passed-in details. If |typeface| is
   // empty, a new typeface will be loaded.
-  void InitFromDetails(
-      const skia::RefPtr<SkTypeface>& typeface,
-      const std::string& font_family,
-      int font_size_pixels,
-      int style,
-      const FontRenderParams& params);
+  void InitFromDetails(const skia::RefPtr<SkTypeface>& typeface,
+                       const std::string& font_family,
+                       int font_size_pixels,
+                       bool italic,
+                       gfx::Font::Weight weight,
+                       const FontRenderParams& params);
 
   // Initializes this object as a copy of another PlatformFontLinux.
   void InitFromPlatformFont(const PlatformFontLinux* other);
@@ -83,7 +87,7 @@ class GFX_EXPORT PlatformFontLinux : public PlatformFont {
   // Skia actually expects a family name and not a font name.
   std::string font_family_;
   int font_size_pixels_;
-  int style_;
+  bool italic_;
 #if defined(OS_CHROMEOS)
   float device_scale_factor_;
 #endif
@@ -97,6 +101,7 @@ class GFX_EXPORT PlatformFontLinux : public PlatformFont {
   int height_pixels_;
   int cap_height_pixels_;
   double average_width_pixels_;
+  gfx::Font::Weight weight_;
 
 #if defined(OS_CHROMEOS)
   // A font description string of the format used by gfx::FontList.