Remove an errant DCHECK that breaks the Debug unittests.
Remove an errant DCHECK that breaks the Debug unittests.

TBR= siggi@chromium.org, chrisha@chromium.org
BUG=
TEST=

Review URL: http://codereview.appspot.com/5538046

git-svn-id: db59699583a60be9a535cd09cdc9132301867226@610 15e8cca8-e42c-11de-a347-f34a4f72eb7d

ericmckean/syzygy,sebmarchand/syzygy,supriyantomaftuh/syzygy,supriyantomaftuh/syzygy,wangming28/syzygy,Eloston/syzygy,ericmckean/syzygy,wangming28/syzygy,pombreda/syzygy,wangming28/syzygy,wangming28/syzygy,ericmckean/syzygy,pombreda/syzygy,pombreda/syzygy,pombreda/syzygy,google/syzygy,sebmarchand/syzygy,supriyantomaftuh/syzygy,supriyantomaftuh/syzygy,sebmarchand/syzygy,Eloston/syzygy,sebmarchand/syzygy,ericmckean/syzygy,sebmarchand/syzygy,google/syzygy,google/syzygy,pombreda/syzygy,ericmckean/syzygy,google/syzygy