Componentize gcm_account_tracker

components/gcm_driver/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.
 
 # GYP version: components/gcm_driver.gypi:gcm_driver
 static_library("gcm_driver") {
   sources = [
     "android/component_jni_registrar.cc",
     "android/component_jni_registrar.h",
     "default_gcm_app_handler.cc",
     "default_gcm_app_handler.h",
     "gcm_account_mapper.cc",
     "gcm_account_mapper.h",
+    "gcm_account_tracker.cc",
+    "gcm_account_tracker.h",
     "gcm_activity.cc",
     "gcm_activity.h",
     "gcm_app_handler.cc",
     "gcm_app_handler.h",
     "gcm_backoff_policy.cc",
     "gcm_backoff_policy.h",
     "gcm_channel_status_request.cc",
     "gcm_channel_status_request.h",
     "gcm_channel_status_syncer.cc",
     "gcm_channel_status_syncer.h",
@@ skipping 87 matching lines @@
     ]
     deps -= [ "//google_apis/gcm:test_support" ]
   }
 }
 
 if (!is_android) {
   source_set("unit_tests") {
     testonly = true
     sources = [
       "gcm_account_mapper_unittest.cc",
+      "gcm_account_tracker_unittest.cc",
       "gcm_channel_status_request_unittest.cc",
       "gcm_client_impl_unittest.cc",
       "gcm_delayed_task_controller_unittest.cc",
       "gcm_driver_desktop_unittest.cc",
       "gcm_stats_recorder_impl_unittest.cc",
     ]
 
     deps = [
       ":gcm_driver",
       ":test_support",
       "//testing/gtest",
       "//third_party/protobuf:protobuf_lite",
     ]
   }
 }