Cleanup policy caption and description.

Captions: Use Enable/Control instead of Enables/Controls for consistency.
Description: Use enabled/disabled instead of "set to true" and "set to false".

Bug: 834939
Change-Id: Ie6552e87a9977046164874e981dde8e0725b1b6c
Reviewed-on: https://chromium-review.googlesource.com/1088872
Commit-Queue: Roger Tawa <rogerta@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#567019}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b06dc450243d14afecea2a0fc1de62b1457fc6f7
1 file changed