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Patch was never properly enabled, and breaks XP when it is enabled. This
is the first step towards getting CPU(32BIT) fixed, at which point this
can be re-implemented and tested properly by CQ given a correct CPU(32BIT)
definition.

BUG=394591
R=cevans@chromium.org

Review URL: https://codereview.chromium.org/721813002

git-svn-id: svn://svn.chromium.org/blink/trunk@185256 bbb929c8-8fbe-4397-9dbb-9b2b20218538