Revert "Move localmatrix routines to shaderbase, no need to be public."

This reverts commit f4a8d6fc94c63efcb9ed9ad6ee9510b8c4365446.

Reason for revert: need to guard this for google3

Original change's description:
> Move localmatrix routines to shaderbase, no need to be public.
> 
> Requires https://chromium-review.googlesource.com/c/chromium/src/+/1554040
> 
> Bug: skia:8941
> Change-Id: I68593bf794d559845b638e1ecbcc658cc5cfe1b4
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206165
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=halcanary@google.com,fmalita@chromium.org,reed@google.com

Change-Id: I2dc2f2ff2291c0b4579f32f1a6a8f283a156f6c0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:8941
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/206263
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
8 files changed