Disable AVFoundation on macOS <10.12

Fullscreen low power mode (which is triggered by use of AVFoundation)
is causing 10.11's WindowServer to crash.

Bug: 806506
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I40cfdfbd932be56cf0078c91cad824ee6895f9b6
Reviewed-on: https://chromium-review.googlesource.com/892097Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533072}

gpu/config/gpu_driver_bug_list.json

@@ -2795,6 +2795,21 @@
       "features": [
         "max_msaa_sample_count_4"
       ]
+    },
+    {
+      "id": 255,
+      "description": "Fullscreen video crashes macOS 10.11 WindowServer.",
+      "cr_bugs": [806506],
+      "os": {
+        "type": "macosx",
+        "version": {
+          "op": "<",
+          "value": "10.12"
+        }
+      },
+      "features": [
+        "disable_av_sample_buffer_display_layer"
+      ]
     }
   ]
 }