Componentize tab_node_pool to sync_driver

components/sync_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.
 
 import("//build/config/features.gni")
 
 static_library("sync_driver") {
   sources = [
     "backend_data_type_configurer.cc",
     "backend_data_type_configurer.h",
@@ skipping 55 matching lines @@
     "sync_error_controller.h",
     "sync_frontend.cc",
     "sync_frontend.h",
     "sync_prefs.cc",
     "sync_prefs.h",
     "sync_service.h",
     "sync_service_observer.cc",
     "sync_service_observer.h",
     "system_encryptor.cc",
     "system_encryptor.h",
+    "tab_node_pool.cc",
+    "tab_node_pool.h",
     "ui_data_type_controller.cc",
     "ui_data_type_controller.h",
     "user_selectable_sync_type.h",
   ]
 
   deps = [
     "//base",
     "//components/os_crypt",
     "//components/signin/core/browser",
     "//sync",
   ]
 
   if (enable_configuration_policy) {
     sources += [
       "sync_policy_handler.cc",
       "sync_policy_handler.h",
     ]
   }
 }
 
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "tab_node_pool_unittest.cc",

[sdefresne, 2015/08/12 07:11:13]

Can you also add the unit tests that are listed in
"sync_driver_unittest_sources" in components/components_tests.gypi here too? The
goal is to have the same unit tests running with gyp and gn.

This can be done as a followup CL if you prefer.

[Abhishek, 2015/08/12 07:49:05]

I'm okay with anything. But IMO its better to raise in follow up CL for bug
http://crbug.com/519366 .

+  ]
+
+  deps = [
+    ":sync_driver",
+    "//sync",
+    "//testing/gtest",
+  ]
+}
+
 static_library("test_support") {
   testonly = true
   sources = [
     "change_processor_mock.cc",
     "change_processor_mock.h",
     "data_type_controller_mock.cc",
     "data_type_controller_mock.h",
     "data_type_error_handler_mock.cc",
     "data_type_error_handler_mock.h",
     "data_type_manager_mock.cc",
@@ skipping 13 matching lines @@
   deps = [
     ":sync_driver",
     "//base",
     "//components/sessions",
     "//sync",
     "//sync:test_support_sync_internal_api",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }