Refactor devtools_web_tests, webgpu_blink_web_tests targets.

This converts the two test suites from 'script' tests to
'generated_script' tests, pushing more of the command line logic
into GN targets (and the generated wrapper scripts).

Bug: 816629
Change-Id: I0ebca0c54d61c6c60734147ebfef1673bd262ed7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2462623Reviewed-by: Robert Ma <robertma@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#815648}

BUILD.gn

@@ -1039,13 +1039,6 @@ if (!is_ios) {
     }
   }
 
-  group("devtools_web_tests") {
-    testonly = true
-    deps = [ ":blink_web_tests" ]
-    data_deps = [ ":blink_web_tests" ]
-    data = [ "//third_party/devtools-frontend/src/test/webtests/" ]
-  }
-
   group("blink_web_tests_support_data") {
     testonly = true
     data_deps = [
@@ -1145,28 +1138,25 @@ if (!is_ios) {
     }
   }
 
-  # https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_tests.md
-  script_test("blink_web_tests") {
-    script = "//testing/scripts/run_isolated_script_test.py"
+  _common_web_test_script = "//testing/scripts/run_isolated_script_test.py"
 
-    args = [ "@WrappedPath(" +
-             rebase_path("//third_party/blink/tools/run_web_tests.py",
+  _common_web_test_args = [ "@WrappedPath(" + rebase_path(
+                                "//third_party/blink/tools/run_web_tests.py",
                                 root_build_dir) + ")" ]
-
   if (is_debug) {
-      args += [ "--debug" ]
+    _common_web_test_args += [ "--debug" ]
   } else {
-      args += [ "--release" ]
+    _common_web_test_args += [ "--release" ]
   }
 
   if (is_android) {
-      args += [
+    _common_web_test_args += [
       "--platform",
       "android",
     ]
   }
 
-    args += [
+  _common_web_test_args += [
     "--seed",
     "4",
     "--no-show-results",
@@ -1178,6 +1168,12 @@ if (!is_ios) {
     "100",
   ]
 
+  # https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_tests.md
+  script_test("blink_web_tests") {
+    script = _common_web_test_script
+
+    args = _common_web_test_args
+
     data_deps = [ ":blink_web_tests_support_data" ]
     data = [
       "//third_party/blink/perf_tests/",
@@ -1185,11 +1181,31 @@ if (!is_ios) {
     ]
   }
 
-  generate_wrapper("webgpu_blink_web_tests") {
-    testonly = true
-    wrapper_script = "${root_build_dir}/bin/run_webgpu_blink_web_tests"
-    executable = "//third_party/blink/tools/run_web_tests.py"
-    executable_args = [
+  script_test("devtools_web_tests") {
+    # This target differs from :blink_web_tests in that it uses the
+    # same test harness but runs an entirely different set of tests
+    # and doesn't have a dependency on the web_test directory at all.
+    script = _common_web_test_script
+
+    args = _common_web_test_args + [
+             "--layout-test-directory=@WrappedPath(" + rebase_path(
+                     "//third_party/devtools-frontend/src/test/webtests",
+                     root_out_dir) + ")",
+             "http/tests/devtools",
+           ]
+
+    data_deps = [ ":blink_web_tests_support_data" ]
+    data = [ "//third_party/devtools-frontend/src/test/webtests/" ]
+  }
+
+  script_test("webgpu_blink_web_tests") {
+    # This target differs from :blink_web_tests in that it uses the same
+    # test harness and a few additional flags but, more importantly, only runs
+    # the web_tests/wpt_internal/webgpu tests, so it doesn't have a data
+    # dependency on the whole web_test directory.
+    script = _common_web_test_script
+    args =
+        _common_web_test_args + [
           "--additional-driver-flag=--enable-unsafe-webgpu",
           "--ignore-default-expectations",
           "--additional-expectations",
@@ -1197,19 +1213,6 @@ if (!is_ios) {
           "--isolated-script-test-filter=wpt_internal/webgpu/*",
         ]
 
-    if (is_debug) {
-      executable_args += [ "--debug" ]
-    } else {
-      executable_args += [ "--release" ]
-    }
-
-    if (is_android) {
-      executable_args += [
-        "--platform",
-        "android",
-      ]
-    }
-
     data_deps = [ ":blink_web_tests_support_data" ]
     data = [
       "//third_party/blink/web_tests/WebGPUExpectations",

testing/buildbot/gn_isolate_map.pyl

@@ -269,23 +269,12 @@
     "type": "additional_compile_target",
   },
   "devtools_web_tests": {
+    "label": "//:devtools_web_tests",
+    "type": "generated_script",
     "args": [
-      "../../third_party/blink/tools/run_web_tests.py",
-      "--seed",
-      "4",
-      "--no-show-results",
-      "--zero-tests-executed-ok",
-      "--clobber-old-results",
-      "--exit-after-n-failures",
-      "5000",
-      "--exit-after-n-crashes-or-timeouts",
-      "100",
       "--results-directory",
       "${ISOLATED_OUTDIR}",
     ],
-    "label": "//:devtools_web_tests",
-    "script": "//testing/scripts/run_isolated_script_test.py",
-    "type": "script",
   },
   "boringssl_crypto_tests": {
     "label": "//third_party/boringssl:boringssl_crypto_tests",
@@ -1854,28 +1843,12 @@
     "type": "junit_test",
   },
   "webgpu_blink_web_tests": {
+    "label": "//:webgpu_blink_web_tests",
+    "type": "generated_script",
     "args": [
-      "../../third_party/blink/tools/run_web_tests.py",
-      "--seed",
-      "4",
-      "--no-show-results",
-      "--zero-tests-executed-ok",
-      "--clobber-old-results",
-      "--exit-after-n-failures",
-      "5000",
-      "--exit-after-n-crashes-or-timeouts",
-      "100",
       "--results-directory",
       "${ISOLATED_OUTDIR}",
-      # WebGPU specific
-      "--additional-driver-flag=--enable-unsafe-webgpu",
-      "--ignore-default-expectations",
-      "--additional-expectations=../../third_party/blink/web_tests/WebGPUExpectations",
-      "--isolated-script-test-filter=wpt_internal/webgpu/*",
     ],
-    "label": "//:webgpu_blink_web_tests",
-    "script": "//testing/scripts/run_isolated_script_test.py",
-    "type": "script",
   },
   "weblayer_browsertests": {
     "label": "//weblayer/test:weblayer_browsertests",

testing/buildbot/test_suites.pyl

@@ -1250,6 +1250,7 @@
         }
       },
       'webkit_layout_from_devtools': {
+        # TODO(crbug.com/816629) - Move these args into //BUILD.gn .
         # layout test failures are retried 3 times when '--test-list' is not
         # passed, but 0 times when '--test-list' is passed. We want to always
         # retry 3 times, so we explicitly specify it.
@@ -3121,6 +3122,7 @@
 
     'gpu_webgpu_integration_extra_isolated_scripts': {
       'webgpu_blink_web_tests_with_backend_validation': {
+        # TODO(crbug.com/816629) - Move these args into //BUILD.gn.
         'name': 'webgpu_blink_web_tests_with_backend_validation',
         'args': [
           '--driver-logging',
@@ -3161,6 +3163,7 @@
 
     'gpu_webgpu_integration_isolated_scripts': {
       'webgpu_blink_web_tests': {
+        # TODO(crbug.com/816629) - Move these args into //BUILD.gn.
         'name': 'webgpu_blink_web_tests',
         'args': [
           '--driver-logging',