Record MetricsService's execution phase to the stability file

components/metrics/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 declare_args() {
   # Overrides os name in uma metrics log to "Blimp".
   metrics_use_blimp = false
 }
 
 # These are only used by the blimp team, which has entirely migrated to gn,
@@ skipping 67 matching lines @@
     "url_constants.h",
   ]
 
   public_deps = [
     "//components/metrics/proto",
   ]
   deps = [
     ":call_stack_profile_params",
     "//base",
     "//base:base_static",
+    "//components/browser_watcher:stability",
     "//components/prefs",
     "//components/variations",
     "//third_party/zlib:compression_utils",
   ]
 
   if (is_chromeos) {
     deps += [ ":serialization" ]
   }
 
   if (is_mac) {
@@ skipping 252 matching lines @@
     deps += [ "leak_detector:unit_tests" ]
   }
 
   # iOS is not supported by the profiler and the ios-simulator bot chokes on
   # these tests.
   if (is_ios) {
     sources -= [ "child_call_stack_profile_collector_unittest.cc" ]
     deps -= [ "//components/metrics/public/cpp:call_stack_unit_tests" ]
   }
 }