Test swarm telemetry_gpu_unittests on "Windows Tests", "Mac tests", "Linux tests" and FYI bot

testing/buildbot/chromium.win.json

Index: testing/buildbot/chromium.win.json
diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index 8fc211f3630bb218160dc43a7cbc1da597601c33..7bb80b69ac8ec5a2dd0fb26de87e340cf36e29d6 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -683,7 +683,10 @@
     "isolated_scripts": [
       {
         "isolate_name": "telemetry_gpu_unittests",
-        "name": "telemetry_gpu_unittests"
+        "name": "telemetry_gpu_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        }
       }
     ],
     "scripts": [
@@ -1118,7 +1121,10 @@
     "isolated_scripts": [
       {
         "isolate_name": "telemetry_gpu_unittests",
-        "name": "telemetry_gpu_unittests"
+        "name": "telemetry_gpu_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        }
       }
     ],
     "scripts": [
@@ -1458,7 +1464,10 @@
     "isolated_scripts": [
       {
         "isolate_name": "telemetry_gpu_unittests",
-        "name": "telemetry_gpu_unittests"
+        "name": "telemetry_gpu_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        }
       }
     ],
     "scripts": [
@@ -1986,7 +1995,10 @@
     "isolated_scripts": [
       {
         "isolate_name": "telemetry_gpu_unittests",
-        "name": "telemetry_gpu_unittests"
+        "name": "telemetry_gpu_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        }
       }
     ],
     "scripts": [