Adding latency_unittests to run on trybots.

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index 6f9adeaca99037d0ada7ce1afda138d44f3a5734..5e6a766d632bf813ec9b438090c0e5fa9eeca095 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -119,6 +119,12 @@
         "test": "ipc_tests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "latency_unittests"
+      },
+      {
         "args": [
           "--tool=asan"
         ],
@@ -578,6 +584,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "latency_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": false
         },
         "test": "media_blink_unittests"
@@ -955,6 +967,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "latency_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": false
         },
         "test": "media_blink_unittests"