Fix up problems when bundle doesn't exist for service process on Mac.
Fix up problems when bundle doesn't exist for service process on Mac.

BUG=74690
TEST=Start up cloud print or remoting, then quit chrome. Move chrome.app somewhere else on your system. Restart chrome. Shouldn't crash.

Review URL: http://codereview.chromium.org/6613004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@76754 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