[telemetry] When launching an application elevated, check if it has NOPASSWD in sudoers.

[telemetry] When launching an application elevated, check if it has NOPASSWD in sudoers.

Checking if the current process is elevated is not sufficient, because sudoers can grant permissions for specific apps.

Also use the full path for sudo.

BUG=420615
Committed: https://crrev.com/273f963bb4b7bcafa351d2eae82a05ccaa8ee9e0
Cr-Commit-Position: refs/heads/master@{#303176}

[dtu, 2014-11-07 00:37:06]

dtu@chromium.org changed reviewers:
+ tonyg@chromium.org

[tonyg, 2014-11-07 02:27:05]

lgtm assuming this works on both linux & mac

[dtu, 2014-11-07 02:28:06]

The CQ bit was checked by dtu@chromium.org

[commit-bot: I haz the power, 2014-11-07 02:28:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/703203004/40001

[commit-bot: I haz the power, 2014-11-07 03:24:37]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2014-11-07 03:25:22]

Patchset 3 (id:??) landed as
https://crrev.com/273f963bb4b7bcafa351d2eae82a05ccaa8ee9e0
Cr-Commit-Position: refs/heads/master@{#303176}