Workaround for Intel 6xxx clear to 0/1 bug

gpu/config/gpu_driver_bug_list.json

 {
   "name": "gpu driver bug list",
-  "version": "10.17",
+  "version": "10.18",
   "entries": [
     {
       "id": 1,
       "description": "Imagination driver doesn't like uploading lots of buffer data constantly",
       "os": {
         "type": "android"
       },
       "gl_vendor": "Imagination.*",
       "features": [
         "use_client_side_arrays_for_stream_buffers"
@@ skipping 2543 matching lines @@
       "id": 235,
       "description": "Avoid waiting on a egl fence before pageflipping and rely on implicit sync.",
       "cr_bugs": [721463],
       "os": {
         "type": "chromeos"
       },
       "gl_vendor": "Intel.*",
       "features": [
         "rely_on_implicit_sync_for_swap_buffers"
       ]
+    },
+    {
+      "id": 236,
+      "description": "glClearColor does not always work on Intel 6xxx Mac drivers",
+      "cr_bugs": [710443],
+      "os": {
+        "type": "macosx",
+        "version": {
+          "op": "<",
+          "value": "10.12.6"
+        }
+      },
+      "vendor_id": "0x8086",
+      "device_id": ["0x1626", "0x162B", "0x1622"],
+      "features": [
+        "clear_to_zero_or_one_broken"
+      ]
     }
   ],
   "comment": [
     "Please update the version number on top whenever you change this file"
   ]
 }