Add suppression for async deletion that may or may not be executed on exit.
Add suppression for async deletion that may or may not be executed on exit.

BUG=None
TEST=run ViewSourceTest with valgrind

Review URL: http://codereview.chromium.org/457022

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@33462 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