Reland "[ios] noncq to run tests on 14.0 simulators"

This is a reland of 297abb5a.

Added the xctest argument for iOS unit tests such that they
are triggered using the correct test runner.

Original change's description:
> [ios] noncq to run tests on 14.0 simulators
>
> ios-simulator-noncq to compile with xc12b5 as well.
> Running iOS 14.0 simulators for our test suites on xc12b5.
>
> Change-Id: I7ca5f763174c296278401ae3563894a4f5210379
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2367792
> Commit-Queue: Jeff Yoon <jeffyoon@chromium.org>
> Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#800739}

Change-Id: Ieb214a3e7788a551258470c1fb076e6603343384
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2370165
Commit-Queue: Jeff Yoon <jeffyoon@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801130}

infra/config/subprojects/chromium/master-only/ci.star

@@ -3040,6 +3040,9 @@ ci.mac_ios_builder(
 
 ci.mac_ios_builder(
     name = "ios-simulator-noncq",
+    caches = [
+        xcode_cache.x12a8189h,
+    ],
     console_view_entry = ci.console_view_entry(
         category = "ios|default",
         short_name = "non",
@@ -3047,6 +3050,9 @@ ci.mac_ios_builder(
     # We don't have necessary capacity to run this configuration in CQ, but it
     # is part of the main waterfall
     main_console_view = "main",
+    properties = {
+        "xcode_build_version": "12a8189h",
+    },
 )
 
 ci.memory_builder(

testing/buildbot/test_suite_exceptions.pyl

@@ -13,6 +13,13 @@
 # it's not possible to add one-off tests to bots. Instead they have to
 # be added to one of the test suites in test_suites.pyl.
 #
+# Note that if you are excluding with variants, you will need to exclude
+# per variant, with the identifier appended to the test suite name.
+# For example, if you have ios_chrome_ui_eg2tests_module with variant
+# SIM_IPHONE_6S_14_0 (identifier = "iPhone 6s 14.0"), you
+# must exclude with the test name as:
+# "ios_chrome_ui_eg2tests_module_iPhone 6s 14.0"
+
 # The goal is to drive the number of exceptions to zero, to make all
 # the bots behave similarly.
 {

testing/buildbot/test_suites.pyl

@@ -5759,6 +5759,48 @@
       }
     },
 
+    # This test suite takes the standard ios test suites,
+    # and removes failing ones from ios14-sdk-simulator.
+    # The result is test suites with certain tests removed,
+    # identified by *_noncq.
+    # The list of variants to use is determined by
+    # ios-simulator and ios-simulator-full config's 12.4
+    # passing sims, converted to 14.0
+    'ios_simulator_noncq_tests': {
+      'ios_common_tests': {
+        'mixins': [
+          'xctest',
+        ],
+        'variants': [
+          'SIM_IPHONE_6S_14_0',
+        ]
+      },
+      'ios_eg2_tests': {
+        'mixins': ['xcode_parallelization'],
+        'variants': [
+          'SIM_IPHONE_6S_14_0',
+          'SIM_IPAD_AIR_2_14_0',
+          'SIM_IPHONE_X_14_0',
+        ]
+      },
+      'ios_eg2_cq_tests': {
+        'mixins': ['xcode_parallelization'],
+        'variants': [
+          'SIM_IPHONE_6S_14_0',
+          'SIM_IPAD_AIR_2_14_0',
+          'SIM_IPHONE_X_14_0',
+        ]
+      },
+      'ios_screen_size_dependent_tests': {
+        'mixins': [
+          'xctest',
+        ],
+        'variants': [
+          'SIM_IPHONE_6S_14_0',
+        ]
+      }
+    },
+
     'ios_simulator_tests': {
       'ios_common_tests': {
         'mixins': [

testing/buildbot/waterfalls.pyl

@@ -4474,7 +4474,15 @@
         'additional_compile_targets': [
           'all'
         ],
-        'test_suites': {},
+        'mixins': [
+          'mac_10.15',
+          'mac_toolchain',
+          'out_dir_arg',
+          'xcode_12a8189h',
+        ],
+        'test_suites': {
+          'isolated_scripts': 'ios_simulator_noncq_tests'
+        },
       },
       'mac-arm64-rel': {
         'additional_compile_targets': [