Update from https://crrev.com/320931

testing/buildbot/chromium.win.json

 {
   "XP Tests (1)": {
     "gtest_tests": [
       "accessibility_unittests",
       {
         "test": "base_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true
         }
       },
@@ skipping 76 matching lines @@
         }
       },
       "installer_util_unittests",
       {
         "test": "interactive_ui_tests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 2
         }
       },
+      "ipc_mojo_unittests",
       "ipc_tests",
       "jingle_unittests",
       {
         "test": "media_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true
         }
       },
       "nacl_loader_unittests",
       {
@@ skipping 680 matching lines @@
       "wm_unittests",
       "aura_unittests",
       "ash_unittests",
       "compositor_unittests",
       "content_browsertests",
       "events_unittests",
       "ui_touch_selection_unittests"
     ]
   }
 }