move quit of paint message_loop into callback of pipeline stop to guarantee message loop will not quit till paint is deinit'ed. BUG=none TEST=dev platform and desktop
move quit of paint message_loop into callback of pipeline stop to guarantee message loop will not quit till paint is deinit'ed.
BUG=none
TEST=dev platform and desktop

Review URL: http://codereview.chromium.org/2870029

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@51070 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