Report expected task queueing time via UMA

components/components_tests.gyp

Index: components/components_tests.gyp
diff --git a/components/components_tests.gyp b/components/components_tests.gyp
index 1830d8505d5127d9383927150a25a7a7890efb6d..80b0c08d1e3b94a697723be5dc87576b970ade41 100644
--- a/components/components_tests.gyp
+++ b/components/components_tests.gyp
@@ -716,12 +716,14 @@
       'safe_json/testing_json_parser_unittest.cc',
     ],
     'scheduler_unittest_sources': [
+      'scheduler/base/queueing_time_estimator_unittest.cc',
       'scheduler/base/task_queue_manager_delegate_for_test.cc',
       'scheduler/base/task_queue_manager_delegate_for_test.h',
       'scheduler/base/task_queue_manager_unittest.cc',
       'scheduler/base/task_queue_selector_unittest.cc',
-      'scheduler/base/test_always_fail_time_source.cc',
-      'scheduler/base/test_always_fail_time_source.h',
+      'scheduler/base/test_count_uses_time_source.cc',
+      'scheduler/base/test_count_uses_time_source.h',
+      'scheduler/base/test_task_time_tracker.h',
       'scheduler/base/test_time_source.cc',
       'scheduler/base/test_time_source.h',
       'scheduler/base/time_domain_unittest.cc',
@@ -1881,6 +1883,7 @@
            'scheduler/base/task_queue_manager_delegate_for_test.cc',
            'scheduler/base/task_queue_manager_delegate_for_test.h',
            'scheduler/base/task_queue_manager_perftest.cc',
+           'scheduler/base/test_task_time_tracker.h',
            'visitedlink/test/visitedlink_perftest.cc',
          ],
          'conditions': [