Ignore desktop creation errors in the sandbox.

Ignore desktop creation errors in the sandbox.
This patch reverts the original behaviour that we ignore errors when creating
the alternative desktop. Also this includes a change to try and open the window
station with lower privileges if the first request fails, which works fine for
operation but not for testing. Finally it logs any failure to create the desktop
as a warning in the existing histogram.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win10_chromium_x64_rel_ng
TEST=1. Test on Windows 7
2. Download PSTools from https://technet.microsoft.com/en-us/sysinternals/pstools.aspx
3. Run cmd.exe as an administrator
4. Run the command 'psexec -s -i 0 c:\path\to\chrome.exe'
5. Click on the icon which indicates there a message on the service desktop. This will switch to the service desktop where chrome is running.
6. Verify that the browser is useable

BUG=615396
Committed: https://crrev.com/37dd5680ab4edbbf730e8540825b9caa8db0d911
Cr-Commit-Position: refs/heads/master@{#409229}

[forshaw, 2016-07-29 17:56:38]

forshaw@chromium.org changed reviewers:
+ wfh@chromium.org

[forshaw, 2016-07-29 17:56:39]

PTAL

[Will Harris, 2016-08-01 22:31:19]

lgtm

[Will Harris, 2016-08-01 22:31:23]

The CQ bit was checked by wfh@chromium.org

[commit-bot: I haz the power, 2016-08-01 22:31:47]

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, 2016-08-01 22:31:49]

Your CL relies on deprecated CQ feature(s):
 * Specifying master names in CQ_INCLUDE_TRYBOTS part of description without
"master." prefix is deprecated:
     tryserver.chromium.win
   For more details, see http://crbug.com/617627.

[commit-bot: I haz the power, 2016-08-02 05:29:39]

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

[commit-bot: I haz the power, 2016-08-02 05:29:40]

Try jobs failed on following builders:
  win10_chromium_x64_rel_ng on tryserver.chromium.win (JOB_TIMED_OUT,
http://build.chromium.org/p/tryserver.chromium.win/builders/win10_chromium_x6...)

[forshaw, 2016-08-02 16:37:25]

The CQ bit was checked by forshaw@chromium.org

[commit-bot: I haz the power, 2016-08-02 16:37:58]

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, 2016-08-02 16:38:00]

Your CL relies on deprecated CQ feature(s):
 * Specifying master names in CQ_INCLUDE_TRYBOTS part of description without
"master." prefix is deprecated:
     tryserver.chromium.win
   For more details, see http://crbug.com/617627.

[commit-bot: I haz the power, 2016-08-02 17:48:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-02 17:51:10]

Description was changed from

==========
Ignore desktop creation errors in the sandbox.
This patch reverts the original behaviour that we ignore errors when creating
the alternative desktop. Also this includes a change to try and open the window
station with lower privileges if the first request fails, which works fine for
operation but not for testing. Finally it logs any failure to create the desktop
as a warning in the existing histogram.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win10_chromium_x64_rel_ng
TEST=1. Test on Windows 7
2. Download PSTools from
https://technet.microsoft.com/en-us/sysinternals/pstools.aspx
3. Run cmd.exe as an administrator
4. Run the command 'psexec -s -i 0 c:\path\to\chrome.exe'
5. Click on the icon which indicates there a message on the service desktop.
This will switch to the service desktop where chrome is running.
6. Verify that the browser is useable

BUG=615396
==========

to

==========
Ignore desktop creation errors in the sandbox.
This patch reverts the original behaviour that we ignore errors when creating
the alternative desktop. Also this includes a change to try and open the window
station with lower privileges if the first request fails, which works fine for
operation but not for testing. Finally it logs any failure to create the desktop
as a warning in the existing histogram.

CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win10_chromium_x64_rel_ng
TEST=1. Test on Windows 7
2. Download PSTools from
https://technet.microsoft.com/en-us/sysinternals/pstools.aspx
3. Run cmd.exe as an administrator
4. Run the command 'psexec -s -i 0 c:\path\to\chrome.exe'
5. Click on the icon which indicates there a message on the service desktop.
This will switch to the service desktop where chrome is running.
6. Verify that the browser is useable

BUG=615396

Committed: https://crrev.com/37dd5680ab4edbbf730e8540825b9caa8db0d911
Cr-Commit-Position: refs/heads/master@{#409229}
==========

[commit-bot: I haz the power, 2016-08-02 17:51:11]

Patchset 1 (id:??) landed as
https://crrev.com/37dd5680ab4edbbf730e8540825b9caa8db0d911
Cr-Commit-Position: refs/heads/master@{#409229}