[Doodle] Make DoodleService a KeyedService and add a factory

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 1414 matching lines @@
     "//components/cookie_config",
     "//components/crx_file",
     "//components/data_reduction_proxy/content/browser",
     "//components/data_reduction_proxy/core/browser",
     "//components/data_usage/core",
     "//components/data_use_measurement/content",
     "//components/data_use_measurement/core:ascriber",
     "//components/device_event_log",
     "//components/dom_distiller/content/browser",
     "//components/domain_reliability",
+    "//components/doodle",
     "//components/error_page/common",
     "//components/favicon/content",
     "//components/favicon/core",
     "//components/favicon_base",
     "//components/flags_ui",
     "//components/gcm_driver",
     "//components/google/core/browser",
     "//components/guest_view/browser",
     "//components/handoff",
     "//components/history/content/browser",
@@ skipping 1230 matching lines @@
       "android/data_usage/external_data_use_reporter.h",
       "android/data_usage/tab_data_use_entry.cc",
       "android/data_usage/tab_data_use_entry.h",
       "android/devtools_manager_delegate_android.cc",
       "android/devtools_manager_delegate_android.h",
       "android/devtools_server.cc",
       "android/devtools_server.h",
       "android/document/document_web_contents_delegate.cc",
       "android/dom_distiller/distiller_ui_handle_android.cc",
       "android/dom_distiller/distiller_ui_handle_android.h",
+      "android/doodle_service_factory.cc",
+      "android/doodle_service_factory.h",
       "android/download/android_download_manager_duplicate_infobar_delegate.cc",
       "android/download/android_download_manager_duplicate_infobar_delegate.h",
       "android/download/chrome_download_delegate.cc",
       "android/download/chrome_download_delegate.h",
       "android/download/chrome_duplicate_download_infobar_delegate.cc",
       "android/download/chrome_duplicate_download_infobar_delegate.h",
       "android/download/dangerous_download_infobar_delegate.cc",
       "android/download/dangerous_download_infobar_delegate.h",
       "android/download/download_controller.cc",
       "android/download/download_controller.h",
@@ skipping 1860 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"
 }