GitLab

According to windbg, it was crashing on this line:
  it->Run(host);
My hypothesis is that one of the tasks modified the task list, corrupting
the iterator.

BUG=138790
TEST=no


Review URL: https://chromiumcodereview.appspot.com/10827003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148402 0039d316-1c4b-4281-b951-d872f2087c98