Reason for revert:
fHeapIndex is not used in release, need to hide behind SK_DEBUG. Failing on Perf-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Release-GN_Android_Vulkan.
Original issue's description:
> Some Vulkan memory fixes and cleanup
>
> * Switch back to not setting transfer_dst on all buffers
> * Add some missing unit tests
> * Add tracking of heap usage for debugging purposes
> * Fall back to non-device-local memory if device-local allocation fails
>
> BUG=skia:5031
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2356343003
>
> Committed: https://skia.googlesource.com/skia/+/c5850e9fdb62cc4ae5ed2b6af51aea92cac07455TBR=egdaniel@google.com,brianosman@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:5031
Review-Url: https://codereview.chromium.org/2358123004