Enabling enable_vr_shell flag and tests on chromium.android

testing/buildbot/chromium.android.json

Index: testing/buildbot/chromium.android.json
diff --git a/testing/buildbot/chromium.android.json b/testing/buildbot/chromium.android.json
index 792fa878f4666bd95c51e41b33a5564265d590db..799da78324ffb0dc2f06093a50f28b7e992a991d 100644
--- a/testing/buildbot/chromium.android.json
+++ b/testing/buildbot/chromium.android.json
@@ -2467,6 +2467,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -2571,6 +2574,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -2678,6 +2684,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -2793,6 +2802,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -2903,6 +2915,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -3010,6 +3025,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
@@ -4049,6 +4067,37 @@
           ]
         },
         "test": "unit_tests"
+      },
+      {
+        "override_isolate_target": "vr_shell_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "cipd_packages": [
+            {
+              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
+              "location": "bin",
+              "revision": "git_revision:3ff24775a900b675866fbcacf2a8f98a18b2a16a"
+            }
+          ],
+          "dimension_sets": [
+            {
+              "device_os": "MMB29Q",
+              "device_type": "bullhead"
+            }
+          ],
+          "hard_timeout": 960,
+          "output_links": [
+            {
+              "link": [
+                "https://luci-logdog.appspot.com/v/?s",
+                "=android%2Fswarming%2Flogcats%2F",
+                "${TASK_ID}%2F%2B%2Funified_logcats"
+              ],
+              "name": "shard #${SHARD_INDEX} logcats"
+            }
+          ]
+        },
+        "test": "vr_shell_unittests"
       }
     ]
   },
@@ -4134,6 +4183,9 @@
       },
       {
         "test": "unit_tests"
+      },
+      {
+        "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [