Use sk_sp for GrVkImageViews.

This is just part of the occasional refactoring to slowly move all of
vulkan resource tracking to sk_sp instead of manual ref/unrefs

Change-Id: I2ed4d5bb4c6acfc89dc6d797019977e1c4bd5d1a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/320065
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
10 files changed