Reland part-3 gpu: Add disk caching for skia generated shaders in OOP-R.

This just re-enables the cache use that was disabled in the previous
patch.

TBR=piman@chromium.org

Bug: 865138
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: Ib61a148ddefea7e7491bea8f59ea363af990d811
Reviewed-on: https://chromium-review.googlesource.com/1144788
Commit-Queue: Khushal <khushalsagar@chromium.org>
Reviewed-by: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576806}
1 file changed