Add sfntly library for font subsetting used in print preview.

DEPS

 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "webkit_trunk": "http://svn.webkit.org/repository/webkit/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
   "webkit_revision": "91470",
   "chromium_git": "http://git.chromium.org/git",
   "swig_revision": "69281",
   # These hashes need to be updated when nacl_revision is changed.
   # After changing nacl_revision, run 'gclient runhooks' to get the new values.
   "nacl_irt_hash_x86_32": "53432ea2ca5f66f159c0af1ad210236b9634e7c4",
   "nacl_irt_hash_x86_64": "fc86ff02675639192b00b0de9dc9d20415d6d306",
   "nacl_revision": "6145",
   # After changing nacl_revision, run 'glient sync' and check native_client/DEPS
   # to update other nacl_*_revision's.
   # TODO(brettw) We should use the "From" syntax to avoid hardcoding the
   # revisions here, but it makes checkdeps confused. We should fix checkdeps.
   "nacl_chrome_ppapi_revision": "93192", # native_client/DEPS: chrome_ppapi_rev 
   "nacl_tools_revision": "5360",  # native_client/DEPS: tools_rev
   "libjingle_revision": "73",
   "libvpx_revision": "90416",
   "ffmpeg_revision": "91042",
+  "sfntly_revision": "20",
   "skia_revision": "1919",
   "v8_revision": "8695",
   "webrtc_revision": "232",
 }
 
 deps = {
   "src/breakpad/src":
     (Var("googlecode_url") % "google-breakpad") + "/trunk/src@786",
 
   "src/build/util/support":
@@ skipping 57 matching lines @@
 
   "src/native_client/src/third_party/ppapi":
     # TODO(brettw) enable the From() line instead when checkdeps is fixed.
     #From("src/native_client", "native_client/src/third_party/ppapi"),
     "/trunk/src/ppapi@" + Var("nacl_chrome_ppapi_revision"),
 
   "src/chrome/test/data/extensions/api_test/permissions/nacl_enabled/bin":
     Var("nacl_trunk") + "/src/native_client/tests/prebuilt@" +
     Var("nacl_revision"),
 
+  "src/third_party/sfntly/src/sfntly":
+    "http://sfntly.googlecode.com/svn/trunk/cpp/src/sfntly@" +
+    #TODO(arthurhsu): replace above line with this after mirror is setup.
+    #(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"),
 
   "src/third_party/skia/src":
     (Var("googlecode_url") % "skia") + "/trunk/src@" + Var("skia_revision"),
 
   "src/third_party/skia/include":
     (Var("googlecode_url") % "skia") + "/trunk/include@" + Var("skia_revision"),
 
   "src/third_party/skia/third_party/glu":
@@ skipping 271 matching lines @@
   {
     # This downloads binaries for Native Client's integrated runtime (IRT)
     # library, which is built as NaCl untrusted code.
     "pattern": ".",
     "action": ["python", "src/build/download_nacl_irt.py",
                "--nacl_revision", Var("nacl_revision"),
                "--file_hash", "x86_32", Var("nacl_irt_hash_x86_32"),
                "--file_hash", "x86_64", Var("nacl_irt_hash_x86_64")],
   },
 ]