Revert "Alloc glyph image correctly for SkMask::k3D_Format."

This reverts commit 1662257bdaaaf26b016bf2a3e329c34f7f5ed581.

Reason for revert: Android still using this API

Original change's description:
> Alloc glyph image correctly for SkMask::k3D_Format.
> 
> Remove the no longer used outside Skia SK_SUPPORT_LEGACY_EMBOSSMASKFILTER
> define, and either delete the code it guards or update it to use the new
> emboss mask filter factory.
> 
> Re-enable the code to test the emboss mask filter.
> 
> Add a test to ensure that embossed text is drawn correctly, as before
> glyphs did not allocate the proper amount of memory for the k3D_Format
> which the emboss mask filter produces.
> 
> Fixes SkEmbossMask::Emboss to write the whole of the mul and add planes
> to avoid pixel differences and MemorySanitizer errors.
> 
> Update the GPU to understand the k3D_Format and use just the alpha
> plane, ignoring the mul and add plane which it currently cannot support.
> 
> Change-Id: Icac1a3f37d6e8c6be3151df570f5e14111e18585
> Reviewed-on: https://skia-review.googlesource.com/70260
> Reviewed-by: Herb Derby <herb@google.com>
> Reviewed-on: https://skia-review.googlesource.com/70962
> Commit-Queue: Ben Wagner <bungeman@google.com>

TBR=djsollen@google.com,bungeman@google.com,herb@google.com

Change-Id: Id6625bae8d3bd70ce7aa3045348c04fdd146c637
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/71183
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

0 files changed, 0 insertions, 0 deletions