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.

NOPRESUBMIT=true
NOTRY=true

Bug: 977050
Change-Id: I4d4e552151fcf1803da1153582af3067f9ff9d0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1700917
Commit-Queue: Eric Foo <efoo@chromium.org>
Reviewed-by: Eric Foo <efoo@chromium.org>
Reviewed-by: Egor Pasko <pasko@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Auto-Submit: Eric Foo <efoo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#680267}

chrome/browser/predictors/OWNERS

 alexilin@chromium.org
 lizeb@chromium.org
 pasko@chromium.org
+# COMPONENT: Internals>Preload

chrome/browser/prefetch/OWNERS

 gavinp@chromium.org
 pasko@chromium.org
+# COMPONENT: Internals>Preload

third_party/metrics_proto/OWNERS

@@ -5,3 +5,4 @@ per-file call_stack_profile.proto=wittman@chromium.org
 per-file execution_context.proto=wittman@chromium.org
 
 # COMPONENT: Internals>Metrics
+# TEAM: chromium-dev@chromium.org

ui/gfx/OWNERS

@@ -53,3 +53,4 @@ per-file *vector_icon*=estade@chromium.org
 per-file BUILD.gn=*
 
 # COMPONENT: UI>GFX
+# TEAM: graphics-dev@chromium.org