Disable glClear on Mali T720 12.1.01alp0

glClear appears to crash on this device. Enabling the "gl_clear_broken"
workaround.

BUG: 860418
Change-Id: I06ff00e2aa7523b43e283bcdc09b2d36ceacf4e4
Reviewed-on: https://chromium-review.googlesource.com/1137784Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576163}

gpu/config/gpu_driver_bug_list.json

@@ -2943,6 +2943,26 @@
       "features": [
         "clear_pixel_unpack_buffer_before_copyteximage"
       ]
+    },
+    {
+      "id": 271,
+      "cr_bugs": [860418],
+      "description": "Frequent crashes in glClear on Mali-T7xx on N with driver 12.1.01alp0",
+      "os": {
+        "type": "android",
+        "version": {
+          "op": "<",
+          "value": "8.0"
+        }
+      },
+      "driver_version": {
+        "op": "=",
+        "value": "12.1.01alp0"
+      },
+      "gl_renderer": ".*Mali-T7.*",
+      "features": [
+        "gl_clear_broken"
+      ]
     }
   ]
 }