Fix a syntax error in runtest.py following r293755.
Fix a syntax error in runtest.py following r293755.

BUG=372458
TBR=glider@chromium.org

Review URL: https://codereview.chromium.org/868863002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293761 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build