Roll libphonenumber r456

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 27 matching lines @@
   "nacl_toolchain_pnacl_win_x86_32_hash":
       "21efccfdd0c567b46ed568acbb931a686505f4dd",
   "nacl_toolchain_win_x86_hash":
       "971ffcb4dd2985c85b3b49ede095d13754145798",
   "nacl_toolchain_win_x86_newlib_hash":
       "40165d4b6c1d4c6bfdaafdf74b98adf0de83060d",
   "nacl_toolchain_revision": "8612",
   "pnacl_toolchain_revision": "8612",
 
   "libjingle_revision": "145",
-  "libphonenumber_revision": "425",
+  "libphonenumber_revision": "456",
   "libvpx_revision": "134182",
   "lss_revision": "9",
 
   # These two FFmpeg variables must be updated together.  One is used for SVN
   # checkouts and the other for Git checkouts.
   "ffmpeg_revision": "138127",
   "ffmpeg_hash": "9b8f7bea0a9b919b15a53e1bad56f251e41b558b",
 
   "sfntly_revision": "128",
   "skia_revision": "4036",
@@ skipping 479 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"],
   },
 ]