Add support for setting QUIC connection options via field trial config.

chrome/chrome_tests_unit.gypi

Index: chrome/chrome_tests_unit.gypi
diff --git a/chrome/chrome_tests_unit.gypi b/chrome/chrome_tests_unit.gypi
index c7d008756dac6cbcf28ba38beb69d38ef085f937..caaee480380b46e4c275e68c926f0d27cd51ab43 100644
--- a/chrome/chrome_tests_unit.gypi
+++ b/chrome/chrome_tests_unit.gypi
@@ -644,6 +644,7 @@
         'browser/captive_portal/captive_portal_tab_helper_unittest.cc',
         'browser/captive_portal/captive_portal_tab_reloader_unittest.cc',
         'browser/chrome_browser_application_mac_unittest.mm',
+        'browser/chrome_content_browser_client_unittest.cc',
         'browser/chrome_elf_init_unittest_win.cc',
         'browser/chrome_page_zoom_unittest.cc',
         'browser/chrome_process_singleton_win_unittest.cc',
@@ -1059,6 +1060,7 @@
         'browser/invalidation/invalidation_service_android_unittest.cc',
         'browser/invalidation/invalidator_storage_unittest.cc',
         'browser/invalidation/ticl_profile_settings_provider_unittest.cc',
+        'browser/io_thread_unittest.cc',
         'browser/local_discovery/gcd_api_flow_unittest.cc',
         'browser/local_discovery/gcd_registration_ticket_request_unittest.cc',
         'browser/local_discovery/privet_confirm_api_flow_unittest.cc',
@@ -1812,10 +1814,9 @@
         'browser/ui/window_sizer/window_sizer_common_unittest.cc',
         'browser/ui/window_sizer/window_sizer_unittest.cc',
         'browser/ui/zoom/zoom_controller_unittest.cc',
-        'browser/upload_list_unittest.cc',
-        'browser/chrome_content_browser_client_unittest.cc',
         'browser/undo/bookmark_undo_service_test.cc',
         'browser/undo/undo_manager_test.cc',
+        'browser/upload_list_unittest.cc',
         'browser/web_applications/web_app_mac_unittest.mm',
         'browser/web_applications/web_app_unittest.cc',
         'browser/web_resource/eula_accepted_notifier_unittest.cc',