Remove the 'Test Finished' step from run_tests.py.
The 'Test Finished' step was introduced in r130823 to absorb the
non-zero exit status which we'd get if any of the test suites in
the batch would fail.
Since the run_tests.py script will print a STEP_FAILURE annotation
for every suite the exit status is redundant and therefore should
be removed.
BUG=none
TEST=none
Review URL: https://chromiumcodereview.appspot.com/
10382100
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@136302 0039d316-1c4b-4281-b951-d872f2087c98