Shard angle_deqp_gles2_vulkan_tests on Android

Bug: 839893
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Change-Id: Ib50865f70c7038bd6ba69aae675212b9f571b6c3
Tbr: kbr@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/1055856Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558015}

content/test/gpu/generate_buildbot_json.py

@@ -1293,6 +1293,7 @@ COMMON_GTESTS = {
             'gpu': LINUX_QUADRO_P400_STABLE_DRIVER,
             'os': 'Ubuntu'
           },
+          # Qualcomm Android Adreno 418
           {
             'device_type': 'bullhead',
             'device_os': 'O',
@@ -1309,7 +1310,7 @@ COMMON_GTESTS = {
         ],
       },
     ],
-    'desktop_swarming': {
+    'swarming': {
       'shards': 4,
     },
     'test': 'angle_deqp_gles2_tests',

testing/buildbot/chromium.gpu.fyi.json

@@ -125,7 +125,8 @@
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
-          ]
+          ],
+          "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
         "use_xvfb": false
@@ -257,7 +258,8 @@
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
-          ]
+          ],
+          "shards": 4
         },
         "test": "angle_deqp_gles2_tests",
         "use_xvfb": false