GitLab

to components/metrics/content and renames
ContentStabilityMetricsProvider. I'm doing this to share
with WebLayer.

Having components depend upon extensions seems bad (and has
compile errors). So, I had to refactor that dependency out.

I will sort out unit-test next.

BUG=1120537
TEST=pure rename.

Change-Id: I4fd9907fa5b52c3a06222b96bb7550f02a12ab95
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2372779
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801425}