Enable D3D11 for AMD switchable on Win10

Regardless of driver being older

BUG=721121
TEST=manual on a AMD switchable win10 device with older driver
R=kbr@chromium.org

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: I25456570984ccbe2bcdf0d452acb71e37a8571ca
Reviewed-on: https://chromium-review.googlesource.com/1089835
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565118}

gpu/config/gpu_driver_bug_list.json

@@ -816,9 +816,13 @@
     {
       "id": 100,
       "description": "Disable Direct3D11 on systems with AMD switchable graphics",
-      "cr_bugs": [451420, 755722],
+      "cr_bugs": [451420, 721121, 755722],
       "os": {
-        "type": "win"
+        "type": "win",
+        "version": {
+          "op": "<",
+          "value": "10"
+        }
       },
       "driver_date": {
         "op": "<",

gpu/config/software_rendering_list.json

@@ -1481,9 +1481,13 @@
     {
       "id": 146,
       "description": "Disable D3D11/WebGL2 on AMD switchable graphics",
-      "cr_bugs": [451420, 755722],
+      "cr_bugs": [451420, 721121, 755722],
       "os": {
-        "type": "win"
+        "type": "win",
+        "version": {
+          "op": "<",
+          "value": "10"
+        }
       },
       "driver_date": {
         "op": "<",