chromeos: Update ARC file task code to use action strings.

chromeos: Update ARC file task code to use action strings.

Make arc_file_tasks.cc use the IntentHandlerInfo struct's
string "action" field rather than the ActionType enum.
ActionTypes are still used when calling HandleUrlList.

BUG=647802
TEST=manual: still able to launch ARC apps for individual
     files or send multiple files from files app

Committed: https://crrev.com/76b5a10e3b8b043793638c3737b9c4685ee8cb09
Cr-Commit-Position: refs/heads/master@{#423797}

[Daniel Erat, 2016-10-07 00:41:21]

derat@chromium.org changed reviewers:
+ kinaba@chromium.org, yusukes@chromium.org

[Daniel Erat, 2016-10-07 00:41:21]

FYI dcheng@ per request on https://codereview.chromium.org/2396633002/

[Daniel Erat, 2016-10-07 00:41:27]

The CQ bit was checked by derat@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-10-07 00:41:53]

Dry run: 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, 2016-10-07 01:27:14]

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

[commit-bot: I haz the power, 2016-10-07 01:27:15]

Dry run: This issue passed the CQ dry run.

[Yusuke Sato, 2016-10-07 03:44:32]

c/arc/ lgtm

[kinaba, 2016-10-07 03:48:53]

lgtm

[Daniel Erat, 2016-10-07 05:01:23]

The CQ bit was checked by derat@chromium.org

[commit-bot: I haz the power, 2016-10-07 05:01:38]

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, 2016-10-07 05:07:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-07 05:08:44]

Description was changed from

==========
chromeos: Update ARC file task code to use action strings.

Make arc_file_tasks.cc use the IntentHandlerInfo struct's
string "action" field rather than the ActionType enum.
ActionTypes are still used when calling HandleUrlList.

BUG=647802
TEST=manual: still able to launch ARC apps for individual
     files or send multiple files from files app
==========

to

==========
chromeos: Update ARC file task code to use action strings.

Make arc_file_tasks.cc use the IntentHandlerInfo struct's
string "action" field rather than the ActionType enum.
ActionTypes are still used when calling HandleUrlList.

BUG=647802
TEST=manual: still able to launch ARC apps for individual
     files or send multiple files from files app

Committed: https://crrev.com/76b5a10e3b8b043793638c3737b9c4685ee8cb09
Cr-Commit-Position: refs/heads/master@{#423797}
==========

[commit-bot: I haz the power, 2016-10-07 05:08:45]

Patchset 1 (id:??) landed as
https://crrev.com/76b5a10e3b8b043793638c3737b9c4685ee8cb09
Cr-Commit-Position: refs/heads/master@{#423797}