Temporary whitelist several cases of disk I/O on the UI threads in cros.

BUG=60211, 70097, 70119, 70131, 62626, 61143, chromium-os:11102, chromium-os:11104, chromium-os:11105, chromium-os:11106, chromium-os:11109
TEST=bots

Review URL: http://codereview.chromium.org/6272012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72331 0039d316-1c4b-4281-b951-d872f2087c98
10 files changed