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This is to be used only on bots where there's a conflict with necessary
(for purposes of testing) 3rd party drivers/components that employ
patching as part of their function. Currently WebRTC's "Win Builder"
will need to set this flag.

BUG=737090

Change-Id: If483b06aa9f0f8a797e41f429cc363979a5c01f3
Reviewed-on: https://chromium-review.googlesource.com/753591
Commit-Queue: Tommi <tommi@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517805}