GitLab

Moving the code that handles the CDM manifest into a separate file
in chrome/common to support manifest parsing outside of the component
updater.

Bug: 889561,971433
Test: new unit_tests pass
Change-Id: I1d6591834f01f1fd01daf5450f5cad08f4af2e26
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1764249Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: John Rummell <jrummell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#695246}