Add Gold dryrun usage to Blink web tests

Adds a dryrun usage of Skia Gold to the pixel tests in the Blink web
tests. Data will be uploaded to Gold as if it were being used for
image comparisons, but any output or exceptions will be ignored. This
is so that the Gold team can see what sort of data the web tests are
producing in order to help determine whether Gold can be adapted to
meet the tests' needs.

Test runtime with this patch vs. without seems to be within margin
of error (+/- a few minutes per bot), so this is not expected to have
any noticeable impact on testing.

Bug: 1290526
Change-Id: Iee484e59c45fd1eef2c4cd1b1c563358eafe653b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3312012
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Auto-Submit: Brian Sheedy <bsheedy@chromium.org>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/main@{#969203}

BUILD.gn

@@ -1168,6 +1168,7 @@ if (!is_ios) {
     }
 
     data = [
+      "//build/skia_gold_common/",
       "//testing/scripts/common.py",
       "//testing/scripts/run_isolated_script_test.py",
       "//testing/xvfb.py",
@@ -1181,6 +1182,7 @@ if (!is_ios) {
       "//third_party/pywebsocket3/src/mod_pywebsocket/",
       "//third_party/test_fonts/test_fonts/",
       "//third_party/wpt_tools/",
+      "//tools/skia_goldctl/",
     ]
 
     if (is_win) {
@@ -1467,6 +1469,7 @@ if (!is_ios) {
       "//build/android/",
       "//build/gn_helpers.py",
       "//build/config/gclient_args.gni",
+      "//build/skia_gold_common/",
       "//components/crash/content/tools/generate_breakpad_symbols.py",
       "//testing/unexpected_passes_common/",
       "//third_party/blink/renderer/bindings/scripts/",
@@ -1490,6 +1493,7 @@ if (!is_ios) {
       "//third_party/depot_tools/pylintrc",
       "//third_party/ply/",
       "//tools/idl_parser/",
+      "//tools/skia_goldctl/",
     ]
   }
 }

testing/buildbot/chromium.clang.json

@@ -9982,6 +9982,7 @@
       {
         "args": [
           "--num-retries=3",
+          "--git-revision=${got_revision}",
           "--platform=fuchsia"
         ],
         "isolate_name": "blink_web_tests",
@@ -9992,6 +9993,11 @@
           "script": "//third_party/blink/tools/merge_web_test_results.py"
         },
         "name": "blink_web_tests",
+        "precommit_args": [
+          "--gerrit-issue=${patch_issue}",
+          "--gerrit-patchset=${patch_set}",
+          "--buildbucket-id=${buildbucket_build_id}"
+        ],
         "resultdb": {
           "enable": true
         },
@@ -10004,7 +10010,7 @@
               "os": "Ubuntu-16.04"
             }
           ],
-          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com"
+          "service_account": "chrome-gold@chops-service-accounts.iam.gserviceaccount.com"
         },
         "test_id_prefix": "ninja://:blink_web_tests/"
       },
@@ -23087,7 +23093,8 @@
       },
       {
         "args": [
-          "--num-retries=3"
+          "--num-retries=3",
+          "--git-revision=${got_revision}"
         ],
         "isolate_name": "blink_web_tests",
         "merge": {
@@ -23097,6 +23104,11 @@
           "script": "//third_party/blink/tools/merge_web_test_results.py"
         },
         "name": "blink_web_tests",
+        "precommit_args": [
+          "--gerrit-issue=${patch_issue}",
+          "--gerrit-patchset=${patch_set}",
+          "--buildbucket-id=${buildbucket_build_id}"
+        ],
         "resultdb": {
           "enable": true
         },
@@ -23109,7 +23121,7 @@
               "os": "Mac-10.15"
             }
           ],
-          "service_account": "chromium-tester@chops-service-accounts.iam.gserviceaccount.com",
+          "service_account": "chrome-gold@chops-service-accounts.iam.gserviceaccount.com",
           "shards": 12
         },
         "test_id_prefix": "ninja://:blink_web_tests/"
@@ -26668,7 +26680,8 @@
       },
       {
         "args": [
-          "--num-retries=3"
+          "--num-retries=3",
+          "--git-revision=${got_revision}"
         ],
         "isolate_name": "blink_web_tests",
         "merge": {
@@ -26678,6 +26691,11 @@
           "script": "//third_party/blink/tools/merge_web_test_results.py"
         },
         "name": "blink_web_tests",
+        "precommit_args": [
+          "--gerrit-issue=${patch_issue}",
+          "--gerrit-patchset=${patch_set}",
+          "--buildbucket-id=${buildbucket_build_id}"
+        ],
         "resultdb": {
           "enable": true
         },
@@ -26691,7 +26709,7 @@
               "pool": "chrome.tests"
             }
           ],
-          "service_account": "chrome-tester@chops-service-accounts.iam.gserviceaccount.com",
+          "service_account": "chrome-gold@chops-service-accounts.iam.gserviceaccount.com",
           "shards": 12
         },
         "test_id_prefix": "ninja://:blink_web_tests/"