Recursive operation delegate continues operations with ignoring errors.

Recursive operation delegate continues operations with ignoring errors.

Previously recursive operation delegate aborted its operation while an error has happened.
This CL adds a method to run a recursive operation with ignoring errors.

BUG=499642
TEST=content_unittests:RecursiveOperationDelegateTest.*

Committed: https://crrev.com/fbdc39ddba07a973c23779f3caa7e110e3e22a52
Cr-Commit-Position: refs/heads/master@{#334783}

[yawano, 2015-06-16 11:19:48]

yawano@chromium.org changed reviewers:
+ tzik@chromium.org

[yawano, 2015-06-16 11:19:48]

PTAL. Thank you!

[tzik, 2015-06-17 05:52:09]

lgtm

[yawano, 2015-06-17 06:02:00]

On 2015/06/17 05:52:09, tzik wrote:
> lgtm

Thank you!

[yawano, 2015-06-17 06:02:04]

The CQ bit was checked by yawano@chromium.org

[commit-bot: I haz the power, 2015-06-17 06:03:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1184343002/1

[commit-bot: I haz the power, 2015-06-17 06:54:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-17 06:56:29]

Patchset 1 (id:??) landed as
https://crrev.com/fbdc39ddba07a973c23779f3caa7e110e3e22a52
Cr-Commit-Position: refs/heads/master@{#334783}