chromeos: Avoid EasyUnlockGetKeysOperation D-Bus log spam.

chromeos: Avoid EasyUnlockGetKeysOperation D-Bus log spam.

Make EasyUnlockGetKeysOperation wait for the cryptohome
D-Bus service to be available before making a GetKeyDataEx
method call to it. Otherwise, we get repeated log spam at
boot:

  [1912:1912:0916/102203:ERROR:object_proxy.cc(583)] Failed to call method: org.chromium.CryptohomeInterface.GetKeyDataEx: object_path= /org/chromium/Cryptohome: org.freedesktop.DBus.Error.ServiceUnknown: The name org.chromium.Cryptohome was not provided by any .service files
  [1912:1912:0916/102203:ERROR:easy_unlock_get_keys_operation.cc(61)] Easy unlock failed to get key data, code=1

BUG=636554
Committed: https://crrev.com/e704807ee8bdb5829fb147f59b74e3a218f4de04
Cr-Commit-Position: refs/heads/master@{#419228}

[Daniel Erat, 2016-09-16 17:53:49]

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

[Daniel Erat, 2016-09-16 17:54:10]

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

[commit-bot: I haz the power, 2016-09-16 17:54:20]

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

[xiyuan, 2016-09-16 17:57:30]

lgtm

Thanks for the documentation.

[Daniel Erat, 2016-09-16 18:13:21]

The CQ bit was unchecked by derat@chromium.org

[Daniel Erat, 2016-09-16 18:13:30]

The CQ bit was checked by derat@chromium.org

[commit-bot: I haz the power, 2016-09-16 18:13:55]

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, 2016-09-16 18:39:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-16 18:40:53]

Description was changed from

==========
chromeos: Avoid EasyUnlockGetKeysOperation D-Bus log spam.

Make EasyUnlockGetKeysOperation wait for the cryptohome
D-Bus service to be available before making a GetKeyDataEx
method call to it. Otherwise, we get repeated log spam at
boot:

  [1912:1912:0916/102203:ERROR:object_proxy.cc(583)] Failed to call method:
org.chromium.CryptohomeInterface.GetKeyDataEx: object_path=
/org/chromium/Cryptohome: org.freedesktop.DBus.Error.ServiceUnknown: The name
org.chromium.Cryptohome was not provided by any .service files
  [1912:1912:0916/102203:ERROR:easy_unlock_get_keys_operation.cc(61)] Easy
unlock failed to get key data, code=1

BUG=636554
==========

to

==========
chromeos: Avoid EasyUnlockGetKeysOperation D-Bus log spam.

Make EasyUnlockGetKeysOperation wait for the cryptohome
D-Bus service to be available before making a GetKeyDataEx
method call to it. Otherwise, we get repeated log spam at
boot:

  [1912:1912:0916/102203:ERROR:object_proxy.cc(583)] Failed to call method:
org.chromium.CryptohomeInterface.GetKeyDataEx: object_path=
/org/chromium/Cryptohome: org.freedesktop.DBus.Error.ServiceUnknown: The name
org.chromium.Cryptohome was not provided by any .service files
  [1912:1912:0916/102203:ERROR:easy_unlock_get_keys_operation.cc(61)] Easy
unlock failed to get key data, code=1

BUG=636554

Committed: https://crrev.com/e704807ee8bdb5829fb147f59b74e3a218f4de04
Cr-Commit-Position: refs/heads/master@{#419228}
==========

[commit-bot: I haz the power, 2016-09-16 18:40:54]

Patchset 1 (id:??) landed as
https://crrev.com/e704807ee8bdb5829fb147f59b74e3a218f4de04
Cr-Commit-Position: refs/heads/master@{#419228}