[sync] Add regression test for TabContentsSyncedTabDelegate crash

chrome/test/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/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3388 matching lines @@
     "../browser/ui/passwords/manage_passwords_state_unittest.cc",
     "../browser/ui/passwords/manage_passwords_view_utils_unittest.cc",
     "../browser/ui/passwords/password_manager_presenter_unittest.cc",
     "../browser/ui/permission_bubble/mock_permission_prompt.cc",
     "../browser/ui/permission_bubble/mock_permission_prompt.h",
     "../browser/ui/permission_bubble/mock_permission_prompt_factory.cc",
     "../browser/ui/permission_bubble/mock_permission_prompt_factory.h",
     "../browser/ui/search_engines/keyword_editor_controller_unittest.cc",
     "../browser/ui/sync/profile_signin_confirmation_helper_unittest.cc",
     "../browser/ui/sync/sync_promo_ui_unittest.cc",
+    "../browser/ui/sync/tab_contents_synced_tab_delegate_unittest.cc",
     "../browser/ui/tests/ui_gfx_image_unittest.cc",
     "../browser/ui/tests/ui_gfx_image_unittest.mm",
     "../browser/ui/webui/browsing_history_handler_unittest.cc",
     "../browser/ui/webui/fileicon_source_unittest.cc",
     "../browser/ui/webui/local_state/local_state_ui_unittest.cc",
     "../browser/ui/webui/log_web_ui_url_unittest.cc",
     "../browser/update_client/chrome_update_query_params_delegate_unittest.cc",
     "../browser/webshare/share_target_pref_helper_unittest.cc",
     "../browser/win/chrome_elf_init_unittest.cc",
     "../browser/win/enumerate_modules_model_unittest.cc",
@@ skipping 1388 matching lines @@
       "winmm.lib",
     ]
     if (!is_chrome_branded) {
       sources -= [ "../browser/google/google_update_win_unittest.cc" ]
     }
   }
   if (is_android) {
     sources -= [
       "../browser/ui/bookmarks/bookmark_ui_utils_desktop_unittest.cc",
       "../browser/ui/sync/sync_promo_ui_unittest.cc",
+      "../browser/ui/sync/tab_contents_synced_tab_delegate_unittest.cc",
     ]
   }
   if (!is_android && !is_chromeos) {
     sources += [
       "../browser/media/webrtc/native_desktop_media_list_unittest.cc",
       "../browser/metrics/desktop_session_duration/desktop_session_duration_tracker_unittest.cc",
       "../browser/signin/signin_global_error_unittest.cc",
       "../browser/signin/signin_util_unittest.cc",
       "../browser/ui/webui/signin/signin_create_profile_handler_unittest.cc",
       "../browser/ui/webui/signin/sync_confirmation_handler_unittest.cc",
@@ skipping 394 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }