Add linux-layout-tests-fragment-paint try bot.

This trybot runs webkit layout tests with NGFragmentPaint runtime flag
set.

R=anushruth@chromium.org, jbudorick@chromium.org

Bug: 1015029
Change-Id: I718e79aeaf4dc547caddd4889fb0fc3f0b8b44d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1875513
Commit-Queue: Arthur Wang <wuwang@google.com>
Reviewed-by: Aaron Gable <agable@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713071}

infra/config/buckets/try.star

@@ -1426,6 +1426,10 @@ linux_builder(
     name = 'linux-layout-tests-fragment-item',
 )
 
+linux_builder(
+    name = 'linux-layout-tests-fragment-paint',
+)
+
 linux_builder(
     name = 'linux_mojo',
     goma_backend = goma.backend.RBE_PROD,

infra/config/consoles/luci.chromium.try.star

@@ -128,6 +128,7 @@ luci.list_view(
         'try/linux_chromium_ubsan_rel_ng',
         'try/linux_layout_tests_composite_after_paint',
         'try/linux-layout-tests-fragment-item',
+        'try/linux-layout-tests-fragment-paint',
         'try/linux_layout_tests_layout_ng_disabled',
         'try/linux_mojo',
         'try/linux_mojo_chromeos',

infra/config/consoles/tryserver.chromium.linux.star

@@ -51,6 +51,7 @@ luci.list_view(
         'try/linux_chromium_ubsan_rel_ng',
         'try/linux_layout_tests_composite_after_paint',
         'try/linux-layout-tests-fragment-item',
+        'try/linux-layout-tests-fragment-paint',
         'try/linux_layout_tests_layout_ng_disabled',
         'try/linux_mojo',
         'try/linux_mojo_chromeos',

infra/config/generated/cr-buildbucket.cfg

@@ -14297,6 +14297,34 @@ buckets: <
         value: 5
       >
     >
+    builders: <
+      name: "linux-layout-tests-fragment-paint"
+      swarming_host: "chromium-swarm.appspot.com"
+      swarming_tags: "vpython:native-python-wrapper"
+      dimensions: "builderless:1"
+      dimensions: "cores:8"
+      dimensions: "cpu:x86-64"
+      dimensions: "os:Ubuntu-16.04"
+      dimensions: "ssd:0"
+      recipe: <
+        name: "chromium_trybot"
+        cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
+        cipd_version: "refs/heads/master"
+        properties_j: "$kitchen:{\"devshell\":true,\"git_auth\":true}"
+        properties_j: "mastername:\"tryserver.chromium.linux\""
+      >
+      execution_timeout_secs: 14400
+      expiration_secs: 7200
+      caches: <
+        name: "win_toolchain"
+        path: "win_toolchain"
+      >
+      build_numbers: YES
+      service_account: "chromium-try-builder@chops-service-accounts.iam.gserviceaccount.com"
+      task_template_canary_percentage: <
+        value: 5
+      >
+    >
     builders: <
       name: "linux-libfuzzer-asan-rel"
       swarming_host: "chromium-swarm.appspot.com"

infra/config/generated/luci-milo.cfg

@@ -9800,6 +9800,9 @@ consoles: <
   builders: <
     name: "buildbucket/luci.chromium.try/linux-layout-tests-fragment-item"
   >
+  builders: <
+    name: "buildbucket/luci.chromium.try/linux-layout-tests-fragment-paint"
+  >
   builders: <
     name: "buildbucket/luci.chromium.try/linux_layout_tests_layout_ng_disabled"
   >
@@ -11886,6 +11889,9 @@ consoles: <
   builders: <
     name: "buildbucket/luci.chromium.try/linux-layout-tests-fragment-item"
   >
+  builders: <
+    name: "buildbucket/luci.chromium.try/linux-layout-tests-fragment-paint"
+  >
   builders: <
     name: "buildbucket/luci.chromium.try/linux_layout_tests_layout_ng_disabled"
   >

testing/buildbot/test_suite_exceptions.pyl

@@ -2112,6 +2112,11 @@
           '--additional-driver-flag=--enable-blink-features=LayoutNGFragmentItem',
         ],
       },
+      'linux-layout-tests-fragment-paint': {
+        'args': [
+          '--additional-driver-flag=--enable-blink-features=LayoutNGFragmentPaint',
+        ],
+      },
       # client.v8.fyi
       'V8 Blink Linux Debug': {
         'args': [

testing/buildbot/tryserver.chromium.linux.json

@@ -31,5 +31,36 @@
         }
       }
     ]
+  },
+  "linux-layout-tests-fragment-paint": {
+    "additional_compile_targets": [
+      "blink_tests"
+    ],
+    "isolated_scripts": [
+      {
+        "args": [
+          "--num-retries=3",
+          "--additional-driver-flag=--enable-blink-features=LayoutNGFragmentPaint"
+        ],
+        "isolate_name": "blink_web_tests_exparchive",
+        "merge": {
+          "args": [
+            "--verbose"
+          ],
+          "script": "//third_party/blink/tools/merge_web_test_results.py"
+        },
+        "name": "webkit_layout_tests",
+        "results_handler": "layout tests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "os": "Ubuntu-16.04"
+            }
+          ],
+          "shards": 12
+        }
+      }
+    ]
   }
 }

testing/buildbot/waterfalls.pyl

@@ -4458,6 +4458,17 @@
           'isolated_scripts': 'chromium_webkit_isolated_scripts',
         },
       },
+      'linux-layout-tests-fragment-paint': {
+        'additional_compile_targets': [
+          'blink_tests',
+        ],
+        'mixins': [
+          'linux-xenial',
+        ],
+        'test_suites': {
+          'isolated_scripts': 'chromium_webkit_isolated_scripts',
+        },
+      },
     },
   },
   {

tools/mb/mb_config.pyl

@@ -846,6 +846,7 @@
       'linux_layout_tests_composite_after_paint': 'release_trybot',
       'linux_layout_tests_layout_ng_disabled': 'release_trybot',
       'linux-layout-tests-fragment-item': 'release_trybot',
+      'linux-layout-tests-fragment-paint': 'release_trybot',
       'linux_mojo': 'release_trybot',
       'linux_mojo_chromeos': 'chromeos_with_codecs_release_trybot',
       'linux_optional_gpu_tests_rel': 'gpu_fyi_tests_release_trybot',