Convert {angle,gl}_unittests to using console_test_launcher.

testing/buildbot/chromium.fyi.json

 {
   "Android Asan Builder Tests (dbg)": {
     "gtest_tests": [
       {
         "args": [
           "--tool=asan"
         ],
         "swarming": {
           "can_use_on_swarming_builders": false
         },
@@ skipping 939 matching lines @@
         "test": "gfx_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "gin_unittests"
       },
       {
         "args": [
-          "--use-gpu-in-tests"
+          "--use-gpu-in-tests",
+          "--no-xvfb"
         ],
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
             {
               "gpu": "10de:104a",
               "os": "Ubuntu"
             }
           ]
         },
@@ skipping 11421 matching lines @@
         "test": "views_unittests"
       }
     ]
   },
   "Win Builder (ANGLE)": {
     "additional_compile_targets": [
       "all"
     ]
   }
 }