[rac] Add re2 dependency to libaddressinput.

This patch adds the re2 dependency to libaddressinput. The dependency will
be used to validate postal code format of addresses. The addresses are
provided by the user. The format regular expressions are from:

 https://i18napis.appspot.com/ssl-address

For example, the US postal code has the following regular expression:

 \\d{5}([ \\-]\\d{4})?

BUG=327046

Review URL: https://codereview.chromium.org/98543010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241447 0039d316-1c4b-4281-b951-d872f2087c98
Cleanup code allowing built-in bookmarks extension to use page action for bookmark star

BUG=323423

Review URL: https://codereview.chromium.org/116873003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241448 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241448