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and //components/u…, also removed duplicated metadata from OWNERS files

Bug: 1113033
Change-Id: I7ff2789f38c4181269a3b292464ba289ac1a9a27
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2570339
Auto-Submit: Norman Rosas <normando@google.com>
Commit-Queue: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833136}