Add component for feature engagement tracking.

chrome/browser/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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 2724 matching lines @@
       "android/download/intercept_download_resource_throttle.cc",
       "android/download/intercept_download_resource_throttle.h",
       "android/download/items/offline_content_aggregator_factory_android.cc",
       "android/download/items/offline_content_aggregator_factory_android.h",
       "android/download/mock_download_controller.cc",
       "android/download/mock_download_controller.h",
       "android/download/ui/thumbnail_provider.cc",
       "android/download/ui/thumbnail_provider.h",
       "android/favicon_helper.cc",
       "android/favicon_helper.h",
+      "android/feature_engagement_tracker/feature_engagement_tracker_factory_android.cc",
+      "android/feature_engagement_tracker/feature_engagement_tracker_factory_android.h",
       "android/feature_utilities.cc",
       "android/feature_utilities.h",
       "android/feedback/connectivity_checker.cc",
       "android/feedback/connectivity_checker.h",
       "android/feedback/screenshot_task.cc",
       "android/feedback/screenshot_task.h",
       "android/find_in_page/find_in_page_bridge.cc",
       "android/find_in_page/find_in_page_bridge.h",
       "android/foreign_session_helper.cc",
       "android/foreign_session_helper.h",
@@ skipping 240 matching lines @@
       "chrome_browser_field_trials_mobile.cc",
       "chrome_browser_field_trials_mobile.h",
       "dom_distiller/dom_distiller_service_factory_android.cc",
       "dom_distiller/dom_distiller_service_factory_android.h",
       "dom_distiller/tab_utils_android.cc",
       "dom_distiller/tab_utils_android.h",
       "download/download_request_infobar_delegate_android.cc",
       "download/download_request_infobar_delegate_android.h",
       "engagement/site_engagement_service_android.cc",
       "engagement/site_engagement_service_android.h",
+      "feature_engagement_tracker/feature_engagement_tracker_factory.cc",
+      "feature_engagement_tracker/feature_engagement_tracker_factory.h",
       "geolocation/geolocation_infobar_delegate_android.cc",
       "geolocation/geolocation_infobar_delegate_android.h",
       "history/android/android_history_provider_service.cc",
       "history/android/android_history_provider_service.h",
       "history/android/android_provider_backend.cc",
       "history/android/android_provider_backend.h",
       "history/android/bookmark_model_sql_handler.cc",
       "history/android/bookmark_model_sql_handler.h",
       "history/android/sqlite_cursor.cc",
       "history/android/sqlite_cursor.h",
@@ skipping 91 matching lines @@
       "sync/sessions/sync_sessions_metrics_android.cc",
       "sync/sessions/sync_sessions_metrics_android.h",
     ]
     deps += [
       ":client_discourse_context_proto",
       ":delta_file_proto",
       ":jni_headers",
       "//chrome/browser/android/webapk:proto",
       "//components/cdm/browser",
       "//components/data_usage/android",
+      "//components/feature_engagement_tracker",
       "//components/payments/content/android",
       "//components/precache/content",
       "//components/precache/core",
       "//components/resources:components_resources",
       "//components/safe_browsing_db",
       "//components/toolbar",
       "//components/web_contents_delegate_android",
       "//sandbox:sandbox_features",
       "//third_party/android_opengl/etc1",
       "//third_party/android_tools:cpu_features",
@@ skipping 925 matching lines @@
       "../android/java/src/org/chromium/chrome/browser/download/ChromeDownloadDelegate.java",
       "../android/java/src/org/chromium/chrome/browser/download/DownloadController.java",
       "../android/java/src/org/chromium/chrome/browser/download/DownloadInfo.java",
       "../android/java/src/org/chromium/chrome/browser/download/DownloadItem.java",
       "../android/java/src/org/chromium/chrome/browser/download/DownloadManagerService.java",
       "../android/java/src/org/chromium/chrome/browser/download/items/OfflineContentAggregatorFactory.java",
       "../android/java/src/org/chromium/chrome/browser/download/ui/ThumbnailProviderImpl.java",
       "../android/java/src/org/chromium/chrome/browser/engagement/SiteEngagementService.java",
       "../android/java/src/org/chromium/chrome/browser/favicon/FaviconHelper.java",
       "../android/java/src/org/chromium/chrome/browser/favicon/LargeIconBridge.java",
+      "../android/java/src/org/chromium/chrome/browser/feature_engagement_tracker/FeatureEngagementTrackerFactory.java",
       "../android/java/src/org/chromium/chrome/browser/feedback/ConnectivityChecker.java",
       "../android/java/src/org/chromium/chrome/browser/feedback/ScreenshotTask.java",
       "../android/java/src/org/chromium/chrome/browser/findinpage/FindInPageBridge.java",
       "../android/java/src/org/chromium/chrome/browser/history/BrowsingHistoryBridge.java",
       "../android/java/src/org/chromium/chrome/browser/historyreport/HistoryReportJniBridge.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/AppBannerInfoBarAndroid.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/AppBannerInfoBarDelegateAndroid.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/AutofillCreditCardFillingInfoBar.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/AutofillSaveCardInfoBar.java",
       "../android/java/src/org/chromium/chrome/browser/infobar/ConfirmInfoBar.java",
@@ skipping 548 matching lines @@
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }