Add test for typeface style round trip.

include/core/SkTypeface.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkTypeface_DEFINED
 #define SkTypeface_DEFINED
 
@@ skipping 328 matching lines @@
         // for Type 1 fonts
     };
 
     /** uniqueID must be unique and non-zero
     */
     SkTypeface(const SkFontStyle& style, bool isFixedPitch = false);
     virtual ~SkTypeface();
 
     /** Sets the fixedPitch bit. If used, must be called in the constructor. */
     void setIsFixedPitch(bool isFixedPitch) { fIsFixedPitch = isFixedPitch; }
+    /** Sets the font style. If used, must be called in the constructor. */
+    void setFontStyle(SkFontStyle style) { fStyle = style; }
 
     friend class SkScalerContext;
     static SkTypeface* GetDefaultTypeface(Style style = SkTypeface::kNormal);
 
     virtual SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
                                                    const SkDescriptor*) const = 0;
     virtual void onFilterRec(SkScalerContextRec*) const = 0;
     virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
                         PerGlyphInfo,
                         const uint32_t* glyphIDs,
@@ skipping 57 matching lines @@
     mutable SkOnce      fBoundsOnce;
     bool                fIsFixedPitch;
 
     friend class SkPaint;
     friend class SkGlyphCache;  // GetDefaultTypeface
 
     typedef SkWeakRefCnt INHERITED;
 };
 
 #endif