Move runhooks to forgiving_optional.
Move runhooks to forgiving_optional.

The android bots don't seem to run runhooks.

BUG=359314

Review URL: https://codereview.chromium.org/225023013

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@261856 0039d316-1c4b-4281-b951-d872f2087c98

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