Componentize OriginsSeenService & provide iOS factory.

ios/chrome/browser/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/features.gni")
 import("//ios/web/js_compile.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 declare_args() {
   google_test_gaia_client_id = ""
@@ skipping 217 matching lines @@
     "memory/memory_metrics.cc",
     "memory/memory_metrics.h",
     "metrics/field_trial_synchronizer.cc",
     "metrics/field_trial_synchronizer.h",
     "metrics/ios_chrome_metrics_service_accessor.cc",
     "metrics/ios_chrome_metrics_service_accessor.h",
     "metrics/ios_chrome_metrics_service_client.cc",
     "metrics/ios_chrome_metrics_service_client.h",
     "metrics/ios_chrome_metrics_services_manager_client.h",
     "metrics/ios_chrome_metrics_services_manager_client.mm",
+    "metrics/ios_chrome_origins_seen_service_factory.cc",
+    "metrics/ios_chrome_origins_seen_service_factory.h",
     "metrics/ios_chrome_stability_metrics_provider.cc",
     "metrics/ios_chrome_stability_metrics_provider.h",
     "metrics/mobile_session_shutdown_metrics_provider.h",
     "metrics/mobile_session_shutdown_metrics_provider.mm",
     "metrics/previous_session_info.h",
     "metrics/previous_session_info.mm",
     "net/chrome_cookie_store_ios_client.h",
     "net/chrome_cookie_store_ios_client.mm",
     "net/connection_type_observer_bridge.h",
     "net/connection_type_observer_bridge.mm",
@@ skipping 313 matching lines @@
     "//components/keyed_service/core",
     "//components/keyed_service/ios",
     "//components/language_usage_metrics",
     "//components/leveldb_proto",
     "//components/metrics",
     "//components/metrics:net",
     "//components/metrics:profiler",
     "//components/metrics:profiler_ios",
     "//components/metrics:ui",
     "//components/metrics_services_manager",
+    "//components/navigation_metrics",
     "//components/net_log",
     "//components/network_time",
     "//components/ntp_snippets",
     "//components/omnibox/browser",
     "//components/open_from_clipboard",
     "//components/password_manager/core/browser",
     "//components/password_manager/sync/browser",
     "//components/policy:policy_component_common",
     "//components/pref_registry",
     "//components/prefs",
@@ skipping 168 matching lines @@
     "//ios/public/provider/chrome/browser",
     "//ios/public/provider/chrome/browser:test_support",
     "//ios/web",
     "//sync",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/base",
     "//url",
   ]
 }