Don't call SetPriorityClass when process_ is 0.
Don't call SetPriorityClass when process_ is 0.

BUG=15606
TEST=none

Original review: http://codereview.chromium.org/149202
Patch by tyoshino@google.com
(Myself. Got code reviewed before becoming committer)


git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@20851 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser