cryptohome: Make CryptohomeClient::Unmount non-blocking

cryptohome: Make CryptohomeClient::Unmount non-blocking

eCryptfs->ext4 crypto migrator will use Unmount.
Before adding a new user, stop blocking the UI thread for this D-Bus
method call.

BUG=702526
TEST=unit_tests --gtest_filter="CryptohomeAuthenticatorTest.*"

Review-Url: https://codereview.chromium.org/2797163002
Cr-Commit-Position: refs/heads/master@{#462311}
Committed: https://chromium.googlesource.com/chromium/src/+/e792e0e91d5b20121b9eb634b43af7eeb04b612f

[hashimoto, 2017-04-05 10:10:41]

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

[commit-bot: I haz the power, 2017-04-05 10:10:58]

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

[hashimoto, 2017-04-05 10:15:22]

hashimoto@chromium.org changed reviewers:
+ xiyuan@chromium.org

[hashimoto, 2017-04-05 10:15:23]

xiyuan@, could you review this CL?

[commit-bot: I haz the power, 2017-04-05 10:51:53]

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

[commit-bot: I haz the power, 2017-04-05 10:51:54]

Dry run: This issue passed the CQ dry run.

[xiyuan, 2017-04-05 16:38:21]

lgtm

[hashimoto, 2017-04-06 01:17:45]

The CQ bit was checked by hashimoto@chromium.org

[commit-bot: I haz the power, 2017-04-06 01:18:08]

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, 2017-04-06 01:34:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491441465167290, "parent_rev":
"4d9872c0015abd0cac4cbaeeb36585109f1b13e8", "commit_rev":
"e792e0e91d5b20121b9eb634b43af7eeb04b612f"}

[commit-bot: I haz the power, 2017-04-06 01:35:56]

Description was changed from

==========
cryptohome: Make CryptohomeClient::Unmount non-blocking

eCryptfs->ext4 crypto migrator will use Unmount.
Before adding a new user, stop blocking the UI thread for this D-Bus
method call.

BUG=702526
TEST=unit_tests --gtest_filter="CryptohomeAuthenticatorTest.*"
==========

to

==========
cryptohome: Make CryptohomeClient::Unmount non-blocking

eCryptfs->ext4 crypto migrator will use Unmount.
Before adding a new user, stop blocking the UI thread for this D-Bus
method call.

BUG=702526
TEST=unit_tests --gtest_filter="CryptohomeAuthenticatorTest.*"

Review-Url: https://codereview.chromium.org/2797163002
Cr-Commit-Position: refs/heads/master@{#462311}
Committed:
https://chromium.googlesource.com/chromium/src/+/e792e0e91d5b20121b9eb634b43a...
==========

[commit-bot: I haz the power, 2017-04-06 01:35:57]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e792e0e91d5b20121b9eb634b43a...