Add code to call skia's matchFamilyStyleCharacter API, which uses the

third_party/WebKit/Source/platform/fonts/FontTraits.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 28 matching lines @@
     FontWeight400 = 3,
     FontWeight500 = 4,
     FontWeight600 = 5,
     FontWeight700 = 6,
     FontWeight800 = 7,
     FontWeight900 = 8,
     FontWeightNormal = FontWeight400,
     FontWeightBold = FontWeight700
 };
 
+// Converts a FontWeight to its corresponding numeric value
+inline int numericFontWeight(FontWeight weight)
+{
+    return (weight - FontWeight100 + 1) * 100;
+}
+
 // Numeric values matching OS/2 & Windows Metrics usWidthClass table.
 // https://www.microsoft.com/typography/otspec/os2.htm
 enum FontStretch {
     FontStretchUltraCondensed = 1,
     FontStretchExtraCondensed = 2,
     FontStretchCondensed = 3,
     FontStretchSemiCondensed = 4,
     FontStretchNormal = 5,
     FontStretchSemiExpanded = 6,
     FontStretchExpanded = 7,
@@ skipping 50 matching lines @@
             unsigned m_weight : 4;
             unsigned m_stretch : 4;
             unsigned m_filler : 21;
         } m_traits;
         FontTraitsBitfield m_bitfield;
     };
 };
 
 } // namespace blink
 #endif // FontTraits_h