Introduces a CHECK to analyze the crash reason.

BUG=322320
R=dewittj@chromium.org
TEST=none

Review URL: https://codereview.chromium.org/115353005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241118 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241118
Allow re-enabling of DISABLE_NOT_VERIFIED extensions if appropriate

This fixes a problem where once an extension gets disabled because the
webstore verification check fails, there was no way to re-enable it. Now
we'll re-run the verification check and if it succeeds then we can
proceed with the re-enabling.

BUG=321230
R=finnur@chromium.org

Review URL: https://codereview.chromium.org/93513006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241119 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241119