Add libpoppler PDF rasterizer

gyp/freetype.gypi

+{
+  'sources': [
+    # base components (required)
+    '../third_party/externals/freetype/src/base/ftsystem.c',
+    '../third_party/externals/freetype/src/base/ftinit.c',
+    '../third_party/externals/freetype/src/base/ftdebug.c',
+    '../third_party/externals/freetype/src/base/ftbase.c',
+
+    '../third_party/externals/freetype/src/base/ftbbox.c',       # recommended, see <freetype/ftbbox.h>
+    '../third_party/externals/freetype/src/base/ftglyph.c',      # recommended, see <freetype/ftglyph.h>
+
+    '../third_party/externals/freetype/src/base/ftbitmap.c',     # optional, see <freetype/ftbitmap.h>
+    '../third_party/externals/freetype/src/base/ftfstype.c',     # optional
+    '../third_party/externals/freetype/src/base/ftgasp.c',       # optional, see <freetype/ftgasp.h>
+    '../third_party/externals/freetype/src/base/ftlcdfil.c',     # optional, see <freetype/ftlcdfil.h>
+    '../third_party/externals/freetype/src/base/ftmm.c',         # optional, see <freetype/ftmm.h>
+    '../third_party/externals/freetype/src/base/ftpatent.c',     # optional
+    '../third_party/externals/freetype/src/base/ftstroke.c',     # optional, see <freetype/ftstroke.h>
+    '../third_party/externals/freetype/src/base/ftsynth.c',      # optional, see <freetype/ftsynth.h>
+    '../third_party/externals/freetype/src/base/fttype1.c',      # optional, see <freetype/t1tables.h>
+    '../third_party/externals/freetype/src/base/ftwinfnt.c',     # optional, see <freetype/ftwinfnt.h>
+    '../third_party/externals/freetype/src/base/ftxf86.c',       # optional, see <freetype/ftxf86.h>
+
+    # font drivers (optional; at least one is needed)
+    '../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/pshinter/pshinter.c', # PS hinting module
+    '../third_party/externals/freetype/src/psnames/psnames.c',   # PostScript glyph names support
+  ],
+  'include_dirs': [
+    '../third_party/externals/freetype/internal',
+    '../third_party/externals/freetype/builds',
+    '../third_party/externals/freetype/include',
+    '../third_party/externals/freetype',
+  ],
+  'defines': [
+    'FT2_BUILD_LIBRARY',
+  ],
+  'conditions': [
+    [ 'skia_warnings_as_errors', {
+      'cflags!': [
+        '-Werror',
+      ],
+    }],
+    [ 'skia_os == "mac"', {
+      'sources': [
+        '../third_party/externals/freetype/src/base/ftmac.c',        # only on the Macintosh
+      ],
+    }],
+  ],
+  'direct_dependent_settings': {
+    'include_dirs': [
+      '../third_party/externals/freetype/include',
+    ],
+  },
+}
+