Create MBI watchlist and CC blink-isolation-reviews@.

Change-Id: If603d2878bc1cd0ee9b333f5b653361adcac33e7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575781Reviewed-by: Dominic Farolino <dom@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Tal Pressman <talp@google.com>
Cr-Commit-Position: refs/heads/master@{#834127}

WATCHLISTS

@@ -42,6 +42,9 @@
                   'chrome/browser/android/shortcut_.*|'\
                   'chrome/browser/android/webapps/',
     },
+    'agent_scheduling_group': {
+      'filepath': '.*agent_scheduling_group.*|.*agent_group_scheduler.*',
+    },
     'android_crash_reporting': {
       'filepath': 'chrome/android/java/src/org/chromium/chrome/browser/crash/' \
                   '|chrome/browser/android/crash/' \
@@ -2098,6 +2101,7 @@
                           'hanxi+watch@chromium.org',
                           'pkotwicz+watch@chromium.org',
                           'webapks-watchlist@chromium.org'],
+    'agent_scheduling_group': ['blink-isolation-reviews@chromium.org'],
     'android_crash_reporting': ['asvitkine+watch@chromium.org',
                                 'wnwen+watch@chromium.org'],
     'android_crazy_linker': ['johnmaguire+watch@google.com'],