Re-committing http://codereview.chromium.org/6803005/ after fixing multi-dll build:

third_party/libphonenumber/README.chromium

Index: third_party/libphonenumber/README.chromium
===================================================================
--- third_party/libphonenumber/README.chromium	(revision 0)
+++ third_party/libphonenumber/README.chromium	(revision 0)
@@ -0,0 +1,29 @@
+Name: International Phone Number Library
+Short Name: libphonenumber
+URL: http://libphonenumber.googlecode.com/svn/trunk/
+Version: unknown
+Revision: 186
+Security Critical: yes
+
+This directory contains the source code of International Phone Number Library
+for C/C++.
+
+This library depends on
+1. base/ for types, scoped_ptr's, etc.
+2. third_party/icu for internationalisation, UTF8-16-32 conversion and regular
+   expressions.
+3. third_party/protobuf Lite version.
+
+Additional files, not in the original library:
+  libphonenumber.gyp
+  README.chromium
+  chrome/regexp_adapter_icuregexp.cc
+
+Until the changes are upstreamed library is included directly, with a patch
+in patches/version186.patch applied. The patch adds plugability to the regular
+expression engine, its RE2 (default) implementation, and the unit-test for the
+changes.
+
+The folders included in our repository for now are
+  cpp/
+  resource/