Make SkFont a bit more useable

include/core/SkPaint.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 SkPaint_DEFINED
 #define SkPaint_DEFINED
 
@@ skipping 1067 matching lines @@
             unsigned        fJoinType : 2;
             unsigned        fStyle : 2;
             unsigned        fTextEncoding : 2;  // 3 values
             unsigned        fHinting : 2;
             unsigned        fFilterQuality : 2;
             //unsigned      fFreeBits : 2;
         } fBitfields;
         uint32_t fBitfieldsUInt;
     };
 
-    GlyphCacheProc getGlyphCacheProc(bool needFullMetrics) const;
+    static GlyphCacheProc GetGlyphCacheProc(TextEncoding encoding,
+                                            bool isDevKern,
+                                            bool needFullMetrics);
 
     SkScalar measure_text(SkGlyphCache*, const char* text, size_t length,
                           int* count, SkRect* bounds) const;
 
     enum ScalerContextFlags : uint32_t {
         kNone_ScalerContextFlags = 0,
 
         kFakeGamma_ScalerContextFlag = 1 << 0,
         kBoostContrast_ScalerContextFlag = 1 << 1,
 
@@ skipping 73 matching lines @@
     friend class GrStencilAndCoverTextContext;
     friend class GrPathRendering;
     friend class GrTextUtils;
     friend class GrGLPathRendering;
     friend class SkScalerContext;
     friend class SkTextBaseIter;
     friend class SkCanonicalizePaint;
 };
 
 #endif