Convert ipc_mojo_unittests 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 0767b2eab7deb7291f9072246dc59bd38e76a2a0..ced51d11d355dcbcb7d091c44b5d28e6f9af627c 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -255,6 +255,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {
@@ -425,6 +428,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {
@@ -557,6 +563,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {
@@ -728,6 +737,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {
@@ -2982,6 +2994,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {
@@ -3426,6 +3441,9 @@
         "test": "gfx_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "gl_unittests"
       },
       {