GitLab

Per-site exceptions for Protected Content / Protected Media Identifier only
exists for CrOS / Android, but r503968 changed the Javascript internally so that
it was defined on all platforms, and updated Site Details to only use it on
CrOS.

This introduced a crash when Chrome tries to get the exceptions for protected
content on non-CrOS in All Sites, so fix by updating All Sites to check for CrOS
before using it.

Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I5c209cedfb6efbaee327a97d448ea9deab737b2d
Bug: 769242
Reviewed-on: https://chromium-review.googlesource.com/688914
Commit-Queue: Patti <patricialor@chromium.org>
Reviewed-by: Dave Schuyler <dschuyler@chromium.org>
Cr-Commit-Position: refs/heads/master@{#505323}