Greatly reduce the race window in ProcessSingleton - fix only for windows - Anantha has a good test to be commited RSN
Greatly reduce the race window in ProcessSingleton
- fix only for windows
- Anantha has a good test to be commited RSN

BUG=9593

Review URL: http://codereview.chromium.org/57082

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@13313 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