Adding latency_unittests to run on trybots.

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 8603b4da90a2a6febe7a1d69c315c7826550c26c..5881722aeff3d2523dbd5d5e51900d0d9668b4bb 100644
--- a/testing/buildbot/chromium.android.json
+++ b/testing/buildbot/chromium.android.json
@@ -679,6 +679,37 @@
         "test": "ipc_tests"
       },
       {
+        "override_isolate_target": "latency_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "cipd_packages": [
+            {
+              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
+              "location": "bin",
+              "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
+            }
+          ],
+          "dimension_sets": [
+            {
+              "android_devices": "4",
+              "device_os": "MMB29Q",
+              "device_type": "bullhead"
+            }
+          ],
+          "output_links": [
+            {
+              "link": [
+                "https://luci-logdog.appspot.com/v/?s",
+                "=android%2Fswarming%2Flogcats%2F",
+                "${TASK_ID}%2F%2B%2Funified_logcats"
+              ],
+              "name": "shard #${SHARD_INDEX} logcats"
+            }
+          ]
+        },
+        "test": "latency_unittests"
+      },
+      {
         "override_isolate_target": "media_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
@@ -1312,6 +1343,9 @@
         "test": "ipc_tests"
       },
       {
+        "test": "latency_unittests"
+      },
+      {
         "test": "media_unittests"
       },
       {
@@ -1927,6 +1961,39 @@
         "test": "ipc_tests"
       },
       {
+        "override_isolate_target": "latency_unittests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "cipd_packages": [
+            {
+              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
+              "location": "bin",
+              "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
+            }
+          ],
+          "dimension_sets": [
+            {
+              "android_devices": "4",
+              "device_os": "LMY48I",
+              "device_type": "hammerhead"
+            }
+          ],
+          "expiration": 10800,
+          "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": "latency_unittests"
+      },
+      {
         "override_isolate_target": "media_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,