Make sure only the main browser process and service proceses are allowed to create the profile dire…

Make sure only the main browser process and service proceses are allowed to create the profile directory.

This patch lets Chrome start with profile located on a network share on
Windows Vista and newer.

BUG=120388
TEST=Start Chrome with --user-data-dir pointing to a network share location and try to navigate to a web page. This should not lead to a hang of the renderer.


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=136042

[pastarmovj, 2012-05-08 15:03:41]

...and this is the last and smallest part of what used to be
https://chromiumcodereview.appspot.com/10306009/. Again basically the old code
with one more check to make sure the CommandLine object is not NULL because in
some tests it seems this code gets called before this object has been
initialized.

(In case you have seem this review request first the bigger description is in :
https://chromiumcodereview.appspot.com/10390003/ :) )

[cpu_(ooo_6.6-7.5), 2012-05-09 01:57:41]

lgtm

[commit-bot: I haz the power, 2012-05-09 14:47:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/pastarmovj@chromium.org/10332056/1001

[commit-bot: I haz the power, 2012-05-09 16:05:47]

Change committed as 136042