Delay bookmarks load while the profile is loading.

chrome/chrome_browser.gypi

 # Copyright 2012 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1497 matching lines @@
         'browser/profiles/profile_metrics.h',
         'browser/profiles/profile_shortcut_manager.cc',
         'browser/profiles/profile_shortcut_manager.h',
         'browser/profiles/profile_shortcut_manager_stub.cc',
         'browser/profiles/profile_shortcut_manager_win.cc',
         'browser/profiles/profile_shortcut_manager_win.h',
         'browser/profiles/refcounted_profile_keyed_service.cc',
         'browser/profiles/refcounted_profile_keyed_service.h',
         'browser/profiles/refcounted_profile_keyed_service_factory.cc',
         'browser/profiles/refcounted_profile_keyed_service_factory.h',
+        'browser/profiles/startup_task_runner_service.cc',
+        'browser/profiles/startup_task_runner_service.h',
+        'browser/profiles/startup_task_runner_service_factory.cc',
+        'browser/profiles/startup_task_runner_service_factory.h',
         'browser/profiles/storage_partition_descriptor.h',
         'browser/remove_rows_table_model.h',
         'browser/renderer_host/chrome_render_message_filter.cc',
         'browser/renderer_host/chrome_render_message_filter.h',
         'browser/renderer_host/chrome_render_view_host_observer.cc',
         'browser/renderer_host/chrome_render_view_host_observer.h',
         'browser/renderer_host/chrome_render_widget_host_view_mac_delegate.h',
         'browser/renderer_host/chrome_render_widget_host_view_mac_delegate.mm',
         'browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc',
         'browser/renderer_host/chrome_resource_dispatcher_host_delegate.h',
@@ skipping 1601 matching lines @@
             'package_name': 'org/chromium/chrome/browser/ui/toolbar',
             'template_deps': ['browser/ui/toolbar/toolbar_model_security_level_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }