Use ChromeBrowserStateManager instead of BrowserListIOS.

ios/chrome/browser/metrics/BUILD.gn

 # Copyright 2016 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.
 
 source_set("metrics") {
   configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "field_trial_synchronizer.cc",
     "field_trial_synchronizer.h",
     "ios_chrome_metrics_service_accessor.cc",
@@ skipping 30 matching lines @@
     "//components/translate/core/browser",
     "//components/variations",
     "//components/variations/service",
     "//components/version_info",
     "//ios/chrome/browser",
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/crash_report",
     "//ios/chrome/browser/google",
     "//ios/chrome/browser/signin",
     "//ios/chrome/browser/sync",
-    "//ios/chrome/browser/ui:browser_list",
+    "//ios/chrome/browser/tabs",
     "//ios/chrome/browser/variations",
     "//ios/chrome/browser/variations:ios_chrome_ui_string_overrider_factory",
     "//ios/chrome/common",
     "//ios/public/provider/chrome/browser",
     "//ios/web",
   ]
 }
 
 source_set("unit_tests") {
   configs += [ "//build/config/compiler:enable_arc" ]
@@ skipping 32 matching lines @@
     "tab_usage_recorder_delegate.h",
   ]
   deps = [
     ":metrics",
     "//base",
     "//components/google/core/browser",
     "//ios/chrome/browser",
     "//ios/chrome/browser/browser_state",
     "//ios/chrome/browser/tabs",
     "//ios/chrome/browser/ui",
-    "//ios/chrome/browser/ui:browser_list",
     "//ios/web",
     "//ui/base",
     "//url",
   ]
   libs = [ "UIKit.framework" ]
 }
 
 source_set("unit_tests_internal") {
   testonly = true
   sources = [
@@ skipping 34 matching lines @@
     "//ios/chrome/browser/ui/tools_menu",
     "//ios/chrome/test/app:test_support",
     "//ios/chrome/test/earl_grey:test_support",
     "//ios/testing:ios_test_support",
     "//ios/third_party/earl_grey",
     "//ios/web:test_support",
     "//ui/base",
   ]
   libs = [ "XCTest.framework" ]
 }