Make resizeStorageToAtLeast static
Make resizeStorageToAtLeast static

This still doesn't share implementation among all T's. I will pull
ResizeStorageToAtLeast into its own type next CL.

Change-Id: I77fc52f9647c45621a8c1f8db775bae5927ba688
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/576840
Commit-Queue: Herb Derby <9e12a3d2bbf73546e47cc9958f6ba8f3215b7eaf@google.com>
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>

google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia,google/skia