Don't show failure of the last succeeded test
Don't show failure of the last succeeded test

Before this change, if some test failed before the last test succeeded,
because of the return value, the buildbot will show that the last test also
failed. Add a summary build step to avoid that.

BUG=None
TEST=None


Review URL: http://codereview.chromium.org/9989001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@130823 0039d316-1c4b-4281-b951-d872f2087c98

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