Revert 63478 - Adds CHECKs in hopes of figuring out why we're crashing on some test bots.
Revert 63478 - Adds CHECKs in hopes of figuring out why we're crashing on some test
bots.

BUG=44991
TEST=none

Review URL: http://codereview.chromium.org/3992005

TBR=sky@chromium.org
Review URL: http://codereview.chromium.org/4028002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@63480 0039d316-1c4b-4281-b951-d872f2087c98

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