Save disabled test results.

If disabled tests run, test launcher was flagged to run them explicitly.
Since we will remove the MANUAL_ flag, we should track the results.

Instead of testing test result tracker procedurally,
We use test launcher unit tests for functional testing.

Bug: 936248
Change-Id: Iafb2d40a9c650964097cd3f1136d6a5012afda3a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1641805
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666438}

base/BUILD.gn

@@ -2691,7 +2691,6 @@ test("base_unittests") {
     "task_runner_util_unittest.cc",
     "template_util_unittest.cc",
     "test/launcher/test_launcher_unittest.cc",
-    "test/launcher/test_results_tracker_unittest.cc",
     "test/launcher/unit_test_launcher_unittest.cc",
     "test/metrics/histogram_enum_reader_unittest.cc",
     "test/metrics/histogram_tester_unittest.cc",
@@ -2889,7 +2888,6 @@ test("base_unittests") {
       "sync_socket_unittest.cc",
       "synchronization/waitable_event_watcher_unittest.cc",
       "test/launcher/test_launcher_unittest.cc",
-      "test/launcher/test_results_tracker_unittest.cc",
       "test/launcher/unit_test_launcher_unittest.cc",
     ]
 

base/test/launcher/test_results_tracker.cc

@@ -276,10 +276,6 @@ void TestResultsTracker::GeneratePlaceholderIteration() {
   for (auto& full_test_name : test_placeholders_) {
     std::string test_name = TestNameWithoutDisabledPrefix(full_test_name);
 
-    // Ignore disabled tests.
-    if (disabled_tests_.find(test_name) != disabled_tests_.end())
-      continue;
-
     TestResult test_result;
     test_result.full_name = test_name;
     test_result.status = TestResult::TEST_NOT_RUN;