Support underline on Linux again.

ui/gfx/linux_font_delegate.h

Index: ui/gfx/linux_font_delegate.h
diff --git a/ui/gfx/linux_font_delegate.h b/ui/gfx/linux_font_delegate.h
index e48b2c695bec86b21408f4c5e65d7487b5446b76..12eaf584b5f2c3cc89a7b8bfdd296abe50acbbe7 100644
--- a/ui/gfx/linux_font_delegate.h
+++ b/ui/gfx/linux_font_delegate.h
@@ -33,11 +33,12 @@ class GFX_EXPORT LinuxFontDelegate {
   // Returns the default font rendering settings.
   virtual FontRenderParams GetDefaultFontRenderParams() const = 0;
 
-  // Returns details about the default UI font.
+  // Returns details about the default UI font. |style_out| holds a bitfield of
+  // gfx::Font::Style values.
   virtual void GetDefaultFontDescription(
       std::string* family_out,
       int* size_pixels_out,
-      bool* italic_out,
+      int* style_out,
       Font::Weight* weight_out,
       FontRenderParams* params_out) const = 0;
 };