exclude unused functions when mac uses freetype (for pdf)

src/ports/SkFontHost_FreeType.cpp

 /*
  * 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.
  */
 
 #include "SkAdvancedTypefaceMetrics.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 438 matching lines @@
         SkASSERT(glyphIndex < SkToUInt(numGlyphs));
         (*glyphToUnicode)[glyphIndex] = charCode;
         charCode = FT_Get_Next_Char(face, charCode, &glyphIndex);
     }
 }
 
 SkAdvancedTypefaceMetrics* SkTypeface_FreeType::onGetAdvancedTypefaceMetrics(
         PerGlyphInfo perGlyphInfo,
         const uint32_t* glyphIDs,
         uint32_t glyphIDsCount) const {
-#if defined(SK_BUILD_FOR_MAC)
-    return nullptr;
-#else
     AutoFTAccess fta(this);
     FT_Face face = fta.face();
     if (!face) {
         return nullptr;
     }
 
     SkAdvancedTypefaceMetrics* info = new SkAdvancedTypefaceMetrics;
     info->fFontName.set(FT_Get_Postscript_Name(face));
     info->fFlags = SkAdvancedTypefaceMetrics::kEmpty_FontFlag;
     if (FT_HAS_MULTIPLE_MASTERS(face)) {
@@ skipping 175 matching lines @@
         }
     }
 
     if (perGlyphInfo & kToUnicode_PerGlyphInfo &&
            info->fType != SkAdvancedTypefaceMetrics::kType1_Font &&
            face->num_charmaps) {
         populate_glyph_to_unicode(face, &(info->fGlyphToUnicode));
     }
 
     return info;
-#endif
 }
 
 ///////////////////////////////////////////////////////////////////////////
 
 static bool bothZero(SkScalar a, SkScalar b) {
     return 0 == a && 0 == b;
 }
 
 // returns false if there is any non-90-rotation or skew
 static bool isAxisAligned(const SkScalerContext::Rec& rec) {
@@ skipping 1168 matching lines @@
                 SkDEBUGF(("Requested font axis not found: %s '%c%c%c%c'\n",
                           name.c_str(),
                           (skTag >> 24) & 0xFF,
                           (skTag >> 16) & 0xFF,
                           (skTag >>  8) & 0xFF,
                           (skTag)       & 0xFF));
             }
         }
     )
 }