rac] Add re2 dependency to libaddressinput.

[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
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=241447

[please use gerrit instead, 2013-12-13 22:22:15]

Evan: PTAL. The file re2.gyp will be used in the upstream. It might change after
I start using re2 in libaddressinput.

[Evan Stade, 2013-12-13 23:30:31]

https://codereview.chromium.org/98543010/diff/20001/third_party/libaddressinp...
File third_party/libaddressinput/chromium/cpp/README (right):

https://codereview.chromium.org/98543010/diff/20001/third_party/libaddressinp...
third_party/libaddressinput/chromium/cpp/README:42:
http://packages.debian.org/experimental/libre2-dev
what... I don't think we can let chrome depend on an experimental package, and
what about non-linux builds?

[please use gerrit instead, 2013-12-14 00:13:47]

On 2013/12/13 23:30:31, Evan Stade wrote:
>
https://codereview.chromium.org/98543010/diff/20001/third_party/libaddressinp...
> File third_party/libaddressinput/chromium/cpp/README (right):
> 
>
https://codereview.chromium.org/98543010/diff/20001/third_party/libaddressinp...
> third_party/libaddressinput/chromium/cpp/README:42:
> http://packages.debian.org/experimental/libre2-dev
> what... I don't think we can let chrome depend on an experimental package, and
> what about non-linux builds?

RE2 is in Chrome (src/third_party/re2) and is used by Chrome already. That's why
I've selected it as my regular expression library of choice.

[Evan Stade, 2013-12-14 00:20:30]

but it's included as source, not as a prebuilt package.

[please use gerrit instead, 2013-12-16 18:36:13]

On 2013/12/14 00:20:30, Evan Stade wrote:
> but it's included as source, not as a prebuilt package.

Standalone libaddressinput will use a prebuilt package of RE2. That's what I
describe in README and ensure in
third_party/libaddressinput/chromium/cpp/libaddressinput.gyp and
third_party/libaddressinput/chromium/cpp/re2.gyp. These changes will be
important for upstreaming libaddressinput.

Libaddressinput as part of Chrome will use Chrome's RE2 target. That's what I do
in third_party/libaddressinput/libaddressinput.gyp.

[Evan Stade, 2013-12-17 20:19:22]

lgtm

[commit-bot: I haz the power, 2013-12-17 23:26:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rouslan@chromium.org/98543010/40001

[commit-bot: I haz the power, 2013-12-18 02:13:28]

Change committed as 241447