Tolerate that CMD_SYNC does not exist (per U2F spec).

Tolerate that CMD_SYNC does not exist (per U2F spec).

BUG=405904
R=mschilder,juanlang,xiyuan

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=291351

[Arnar Birgisson, 2014-08-21 13:36:09]

Marius, Juan, here's a backport of the CMD_SYNC fix. I don't have devices with
differing versions to test here in ZRH, are you able to patch this in and test
manually?

Xiyuan, this is a bug-fix that we'll be requesting to merge.

[xiyuan, 2014-08-21 15:33:40]

lgtm

[Marius, 2014-08-21 15:37:47]

lgtm

[Marius, 2014-08-21 20:25:11]

The CQ bit was checked by mschilder@google.com

[Marius, 2014-08-21 20:26:15]

lgtm

cq already

[commit-bot: I haz the power, 2014-08-21 20:28:48]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/arnarb@chromium.org/495033002/1

[commit-bot: I haz the power, 2014-08-21 22:07:39]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  linux_chromium_chromeos_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  win_chromium_x64_rel_swarming on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[commit-bot: I haz the power, 2014-08-21 22:19:44]

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

[commit-bot: I haz the power, 2014-08-21 22:19:45]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)

[juanlang (chromium.org), 2014-08-21 22:20:51]

The CQ bit was checked by juanlang@chromium.org

[commit-bot: I haz the power, 2014-08-21 22:22:31]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/arnarb@chromium.org/495033002/1

[commit-bot: I haz the power, 2014-08-21 22:45:09]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)

[commit-bot: I haz the power, 2014-08-21 22:47:28]

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

[commit-bot: I haz the power, 2014-08-21 22:47:29]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)

[juanlang (chromium.org), 2014-08-22 03:14:10]

The CQ bit was checked by juanlang@chromium.org

[commit-bot: I haz the power, 2014-08-22 03:15:41]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/arnarb@chromium.org/495033002/1

[commit-bot: I haz the power, 2014-08-22 03:20:01]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)

[commit-bot: I haz the power, 2014-08-22 07:25:13]

Committed patchset #1 (1) as 291351