Add sfntly library for font subsetting used in print preview.

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index fca32b1a89e2f22f93d97364d260e528fad79e23..459e9325f28f38ec1f1869fc725f1b57bf81b7cd 100644
--- a/DEPS
+++ b/DEPS
@@ -16,6 +16,7 @@ vars = {
   "libjingle_revision": "73",
   "libvpx_revision": "90416",
   "ffmpeg_revision": "90064",
+  "sfntly_revision": "9",
   "skia_revision": "1832",
   "v8_revision": "8640",
   "webrtc_revision": "90",
@@ -98,6 +99,10 @@ deps = {
     Var("nacl_trunk") + "/src/native_client/tests/prebuilt@" +
     Var("nacl_revision"),
 
+  "src/third_party/sfntly/src/sfntly":
+    (Var("googlecode_url") % "sfntly") + "/trunk/cpp/src/sfntly@" +
+    Var("sfntly_revision"),
+
   "src/third_party/skia/gpu":
     (Var("googlecode_url") % "skia") + "/trunk/gpu@" + Var("skia_revision"),