Update freetype to version 2.5.0.1 when building it from source.

gyp/freetype.gyp

 {
   'targets': [
     {
       'target_name': 'freetype',
       'type': 'none',
       'conditions': [
         [ 'skia_os in ["linux", "freebsd", "openbsd", "solaris", "chromeos"]', {
           'direct_dependent_settings': {
             'include_dirs' : [
               '/usr/include/freetype2',
@@ skipping 61 matching lines @@
         '../third_party/externals/freetype/src/cff/cff.c',           # CFF/OpenType font driver
         '../third_party/externals/freetype/src/sfnt/sfnt.c',         # SFNT files support (TrueType & OpenType)
         '../third_party/externals/freetype/src/truetype/truetype.c', # TrueType font driver
 
         # rasterizers (optional; at least one is needed for vector formats)
         '../third_party/externals/freetype/src/raster/raster.c',     # monochrome rasterizer
         '../third_party/externals/freetype/src/smooth/smooth.c',     # anti-aliasing rasterizer
 
         # auxiliary modules (optional)
         '../third_party/externals/freetype/src/autofit/autofit.c',   # auto hinting module
-        '../third_party/externals/freetype/src/psaux/psaux.c',       # PostScript Type 1 parsing
         '../third_party/externals/freetype/src/pshinter/pshinter.c', # PS hinting module
         '../third_party/externals/freetype/src/psnames/psnames.c',   # PostScript glyph names support
       ],
       'include_dirs': [
-        '../third_party/freetype',
+        '../third_party/freetype/include_overrides',
         '../third_party/externals/freetype/internal',
         '../third_party/externals/freetype/builds',
         '../third_party/externals/freetype/include',
         '../third_party/externals/freetype',
       ],
       'cflags': [
         '-DFT2_BUILD_LIBRARY',
       ],
       'direct_dependent_settings': {
         'include_dirs': [
+          '../third_party/freetype/include_overrides',
           '../third_party/externals/freetype/include',
         ],
       },
       'conditions': [
         [ 'skia_warnings_as_errors', {
           'cflags!': [
             '-Werror',
           ],
         }],
         [ 'skia_os == "mac"', {
@@ skipping 17 matching lines @@
       ],
     },
   ],
 }
 
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