Adding latency_unittests to run on trybots.

tools/determinism/deterministic_build_whitelist.pyl

 # Copyright 2016 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.
 #
 # This is a .pyl, or "Python Literal", file. You can treat it just like a
 # .json file, with the following exceptions:
 # * all keys must be quoted (use single quotes, please);
 # * comments are allowed, using '#' syntax; and
 # * trailing commas are allowed.
 #
@@ skipping 83 matching lines @@
     'interactive_ui_tests',
     'ipc_fuzzer',
     'ipc_fuzzer_replay',
     'ipc_message_dump.so',
     'ipc_message_list',
     'ipc_message_util',
     'ipc_tests',
     'it2me_standalone_host_main',
     'jingle_unittests',
     'khronos_glcts_test',
+    'latency_unittests',
     'leveldb_service_unittests',
     'libaddressinput_unittests',
     'libapp_shell_framework.dylib',
     'libcommand_buffer_gles2.dylib',
     'libmedia_library.dylib',
     'libphonenumber_unittests',
     'mac_installer_unittests',
     'macviews_interactive_ui_tests',
     'media_blink_unittests',
     'media_service_unittests',
@@ skipping 140 matching lines @@
     'gpu_unittests.exe',
     'image_operations_bench.exe',
     'input_device_unittests.exe',
     'interactive_ui_tests.exe',
     'ipc_perftests.exe',
     'ipc_tests.exe',
     'it2me_standalone_host_main.exe',
     'jingle_unittests.exe',
     'keyboard_unittests.exe',
     'khronos_glcts_test.exe',
+    'latency_unittests.exe',
     'leveldb_service_unittests.exe',
     'libaddressinput_unittests.exe',
     'login_library.dll',
     'mash_init_library.dll',
     'media_blink_unittests.exe',
     'media_library.dll',
     'media_service_unittests.exe',
     'media_mojo_unittests.exe',
     'media_perftests.exe',
     'media_pipeline_integration_unittests.exe',
@@ skipping 89 matching lines @@
     'views_mus_interactive_ui_tests.exe',
     'views_mus_unittests.exe',
     'views_unittests.exe',
     'webkit_unit_tests.exe',
     'webtest_library.dll',
     'window_type_launcher_library.dll',
     'wm_unittests.exe',
     'wtf_unittests.exe',
   ],
 }