Add SkArenaAlloc::makeArrayCopy()

This will make some of the uniform and texture data tracking cleaner
in Graphite.

Bug: b/361603759
Bug: b/361603237
Change-Id: Ie8338e533abdf1b4decaaa1cfd3a912b71f96160
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/896576
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Michael Ludwig <michaelludwig@google.com>
1 file changed