Change OWNERS Component of //chrome Build -> UI>Browser

Notice this in SuperSize reports. UI>Browser is probably a better
catch-all categorization of the code in //chrome than "Build" is.

Change-Id: Id57f0eb0bf69c97381ea5ecde39c039ef8fcdba9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976131Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Dana Fried <dfried@google.com>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726424}

chrome/OWNERS

@@ -28,5 +28,5 @@ per-file VERSION=amineer@chromium.org
 per-file VERSION=anantha@chromium.org
 per-file VERSION=govind@chromium.org
 per-file VERSION=mmoss@chromium.org
-# COMPONENT: Build
+# COMPONENT: UI>Browser
 # TEAM: chromium-reviews@chromium.org

chrome/browser/OWNERS

@@ -78,3 +78,6 @@ per-file chrome_content_browser_client_receiver_bindings.cc=file://ipc/SECURITY_
 per-file chrome_back_forward_cache_browsertest.cc=arthursonzogni@chromium.org
 per-file chrome_back_forward_cache_browsertest.cc=altimin@chromium.org
 per-file chrome_back_forward_cache_browsertest.cc=file://content/OWNERS
+
+# COMPONENT: UI>Browser
+# TEAM: chromium-reviews@chromium.org