OWNERS files updated with latest COMPONENT and TEAMS.

This is CL is generated by a script. Data is pulled from
review conducted in Q2 2019. See https://tinyurl.com/yxau5sc4
for context.

Please review and LGTM before July 16th or the CL will be
submitted as-is.

TBR=charleszhao@chromium.org, noyau@chromium.org, primiano@chromium.org
NOTRY=true
NOPRESUBMIT=true

Bug: 977050
Change-Id: Ibfc0305b31607fc9f379be337d4b5e310f094759
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1699955Reviewed-by: Charles . <charleszhao@chromium.org>
Reviewed-by: Eric Noyau <noyau@chromium.org>
Commit-Queue: Eric Foo <efoo@chromium.org>
Auto-Submit: Eric Foo <efoo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678081}

chrome/browser/assist_ranker/OWNERS

 file://components/assist_ranker/OWNERS
+# COMPONENT: UI>Browser>Search>ContextualSearch

components/reading_list/OWNERS

 noyau@chromium.org
 olivierrobin@chromium.org
+# COMPONENT: UI>Browser>ReaderMode
+# TEAM: ios-directory-owners@chromium.org

services/resource_coordinator/memory_instrumentation/OWNERS

 hjd@chromium.org
 primiano@chromium.org
+# COMPONENT: Internals>Instrumentation>Memory