Add a BUILD target and a script to build a public static library for ios/web_view.

Add a BUILD target and a script to build a public static library for
ios/web_view.

This is a rebase of https://codereview.chromium.org/2665333002/ based on
the conversion of ios/web_view/internal to ARC.

BUG=690805

[michaeldo, 2017-02-13 21:24:14]

Description was changed from

==========
Add a BUILD target and a script to build a public static library for
ios/web_view.

BUG=690805
==========

to

==========
Add a BUILD target and a script to build a public static library for
ios/web_view.

This is a rebase of https://codereview.chromium.org/2665333002/ based on the
conversion of ios/web_view/internal to ARC.

BUG=690805
==========

[michaeldo, 2017-02-13 21:24:14]

michaeldo@chromium.org changed reviewers:
+ eugenebut@chromium.org

[michaeldo, 2017-02-13 21:26:33]

Description was changed from

==========
Add a BUILD target and a script to build a public static library for
ios/web_view.

This is a rebase of https://codereview.chromium.org/2665333002/ based on the
conversion of ios/web_view/internal to ARC.

BUG=690805
==========

to

==========
Add a BUILD target and a script to build a public static library for
ios/web_view.

This is a rebase of https://codereview.chromium.org/2665333002/ based on
the conversion of ios/web_view/internal to ARC.

BUG=690805
==========

[Eugene But (OOO till 7-30), 2017-02-13 23:16:03]

lgtm

[michaeldo, 2017-02-13 23:16:53]

The CQ bit was checked by michaeldo@chromium.org

[commit-bot: I haz the power, 2017-02-13 23:17:40]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-13 23:35:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-02-13 23:35:09]

Try jobs failed on following builders:
  ios-simulator-xcode-clang on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator-xco...)