Enable GPU Rasterization on Mali on Chrome OS

BUG=845650
TEST=install and run Chrome on daisy, minnie and kevin
Signed-off-by: Dominik Behr <dbehr@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: I5e51236142976ab572f40ec2321f880dd168c8af
Reviewed-on: https://chromium-review.googlesource.com/1077378Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Commit-Queue: Stéphane Marchesin <marcheu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565504}

gpu/config/software_rendering_list.json

@@ -1365,7 +1365,7 @@
     },
     {
       "id": 137,
-      "description": "GPU rasterization on CrOS is blacklisted on non-Intel GPUs for now.",
+      "description": "GPU rasterization on CrOS is blacklisted on anything but Intel or Mali GPUs for now.",
       "cr_bugs": [684094],
       "os": {
         "type": "chromeos"
@@ -1374,7 +1374,8 @@
         "gpu_rasterization"
       ],
       "exceptions": [
-        { "vendor_id": "0x8086" }
+        { "vendor_id": "0x8086" },
+        { "gl_renderer": "Mali-T.*" }
       ]
     },
     {