Convert ipc_tests to run exclusively on Swarming

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 6acafee5169fbcd5f8157933fb48c89b4cd93b32..90ccc75b3a7264dd67fc12908e0d3edf4eaf2765 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -1691,6 +1691,9 @@
         "test": "installer_util_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ipc_tests"
       },
       {
@@ -1836,6 +1839,9 @@
         "test": "installer_util_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ipc_tests"
       },
       {
@@ -2934,6 +2940,9 @@
         "test": "interactive_ui_tests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ipc_tests"
       },
       {
@@ -3345,6 +3354,9 @@
         "test": "interactive_ui_tests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ipc_tests"
       },
       {