Changed old-style STEP_EXCEPTION to real exception in order to red build
Changed old-style STEP_EXCEPTION to real exception in order to red build

BUG=364082

Review URL: https://codereview.chromium.org/245973003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@265781 0039d316-1c4b-4281-b951-d872f2087c98

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