Re-enable shader disk cache on Adreno 4/5xx

Now that we have a mitigation for crashes in glProgramBinary when using
cached shaders (crrev.com/2744363002), re-enabling the disk cache on
the previous problematic devices.

While we may still see crashes, these should be limited to 1 per client
id, as opposed to the repeated crashes we see now.

BUG=699122
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

Review-Url: https://codereview.chromium.org/2743423013
Cr-Commit-Position: refs/heads/master@{#459488}
1 file changed