Rolling libjingle revison r163.

DEPS

 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 
 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",
   "sourceforge_url": "http://%(repo)s.svn.sourceforge.net/svnroot/%(repo)s",
   "webkit_trunk": "http://svn.webkit.org/repository/webkit/trunk",
   "nacl_trunk": "http://src.chromium.org/native_client/trunk",
@@ skipping 28 matching lines @@
       "689ef2a1b4b013b4cbfb42e0ff71eaaf5aba5c1d",
   "nacl_toolchain_pnacl_win_x86_32_hash":
       "906beb9ecbc6be9a8f456f45dabd715bae8db16a",
   "nacl_toolchain_win_x86_hash":
       "9a854462e601338153bc65bfdc1171a87dc0bfe6",
   "nacl_toolchain_win_x86_newlib_hash":
       "c4dd3f8b65e309d242a3bfce89a15f580ef2e4f0",
   "nacl_toolchain_revision": "9170",
   "pnacl_toolchain_revision": "9213",
 
-  "libjingle_revision": "161",
+  "libjingle_revision": "163",
   "libphonenumber_revision": "456",
   "libvpx_revision": "147803",
   "lss_revision": "11",
 
   # These two FFmpeg variables must be updated together.  One is used for SVN
   # checkouts and the other for Git checkouts.
   "ffmpeg_revision": "142289",
   "ffmpeg_hash": "23f177366e3bce3a628a7d3feedceed4e18dcc04",
 
   "sfntly_revision": "134",
@@ skipping 507 matching lines @@
     "pattern": ".",
     "action": ["python", "src/build/util/lastchange.py",
                "-o", "src/build/util/LASTCHANGE"],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
 ]