SkPDF: SkPDFFont class changes

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
 
+#include "../private/SkBitmaskEnum.h"
 #include "../private/SkOnce.h"
 #include "../private/SkWeakRefCnt.h"
 #include "SkFontStyle.h"
 #include "SkRect.h"
 #include "SkString.h"
 
 class SkDescriptor;
 class SkFontData;
 class SkFontDescriptor;
 class SkScalerContext;
@@ skipping 393 matching lines @@
     mutable SkRect      fBounds;
     mutable SkOnce      fBoundsOnce;
     bool                fIsFixedPitch;
 
     friend class SkPaint;
     friend class SkGlyphCache;  // GetDefaultTypeface
 
     typedef SkWeakRefCnt INHERITED;
 };
 
+namespace skstd {
+template <> struct is_bitmask_enum<SkTypeface::PerGlyphInfo> : std::true_type {};
+}
+
 #endif