Add gpu_ipc_service_unittests to buildbot configs

testing/buildbot/chromium_memory_trybot.json

 {
   "gtest_tests": [
     "accessibility_unittests",
     {
       "swarming": {
         "can_use_on_swarming_builders": true
       },
       "test": "base_unittests"
     },
     {
@@ skipping 48 matching lines @@
       "test": "display_unittests"
     },
     "extensions_unittests",
     "gcm_unit_tests",
     "gfx_unittests",
     "google_apis_unittests",
     {
       "swarming": {
         "can_use_on_swarming_builders": true
       },
+      "test": "gpu_ipc_service_unittests"
+    },
+    {
+      "swarming": {
+        "can_use_on_swarming_builders": true
+      },
       "test": "gpu_unittests"
     },
     {
       "swarming": {
         "can_use_on_swarming_builders": true,
         "shards": 3
       },
       "test": "interactive_ui_tests"
     },
     "ipc_tests",
@@ skipping 39 matching lines @@
     {
       "swarming": {
         "can_use_on_swarming_builders": true,
         "shards": 2
       },
       "test": "unit_tests"
     },
     "url_unittests"
   ]
 }