Fixed problem with incorrect use of $HOME (breaking multi user ChromeOS)

Fixed problem with incorrect use of $HOME (breaking multi user ChromeOS)

BUG=355227
TEST=visual

Committed: https://crrev.com/66e0255cea8ef64f16cc74b9579c1c37084d4dec
Cr-Commit-Position: refs/heads/master@{#292516}

[Mr4D (OOO till 08-26), 2014-08-28 20:07:39]

skuhne@chromium.org changed reviewers:
+ pkasting@chromium.org

[Mr4D (OOO till 08-26), 2014-08-28 20:08:38]

Please have a look.

Note: $HOME should not be used for various reasons. To address that the new
PathService got created.

[Peter Kasting, 2014-08-28 20:10:40]

LGTM

[Mr4D (OOO till 08-26), 2014-08-28 20:11:17]

The CQ bit was checked by skuhne@chromium.org

[commit-bot: I haz the power, 2014-08-28 20:12:22]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/skuhne@chromium.org/515973003/1

[commit-bot: I haz the power, 2014-08-28 21:08:43]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_tests_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_dbg_tes...)
  linux_chromium_chromeos_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  mac_chromium_rel_swarming on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[commit-bot: I haz the power, 2014-08-28 21:22:43]

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

[commit-bot: I haz the power, 2014-08-28 21:22:44]

Try jobs failed on following builders:
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)

[Mr4D (OOO till 08-26), 2014-08-28 21:46:18]

The CQ bit was checked by skuhne@chromium.org

[commit-bot: I haz the power, 2014-08-28 21:47:41]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/skuhne@chromium.org/515973003/20001

[commit-bot: I haz the power, 2014-08-28 23:27:51]

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

[commit-bot: I haz the power, 2014-08-29 00:14:29]

Committed patchset #2 (id:20001) as c7f70e2a76b4c4fa5ac00610d9d1e07977cf30c3

[commit-bot: I haz the power, 2014-09-10 03:04:10]

Patchset 2 (id:??) landed as
https://crrev.com/66e0255cea8ef64f16cc74b9579c1c37084d4dec
Cr-Commit-Position: refs/heads/master@{#292516}