Add --force option to run all tests, even those marked SKIP. This will mostly be useful when debugging tests.
Add --force option to run all tests, even those marked SKIP. This will mostly
be useful when debugging tests.

BUG=9549
TEST='run_webkit_tests.sh LayoutTests/webarchive/loading --force'; make sure
    some tests are run
Review URL: http://codereview.chromium.org/57068

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@12906 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