Revert "Revert "Delete SkGaussianEdgeShader""

This reverts commit 9d14f936cc09de2a37c05c7af2cf60aa31f74722.

Reason for revert: Android fix merged.

Original change's description:
> Revert "Delete SkGaussianEdgeShader"
> 
> This reverts commit 64790a3714467300848971aa153aca8cea91cf7b.
> 
> Reason for revert: pending Android fix merge.
> 
> Original change's description:
> > Delete SkGaussianEdgeShader
> > 
> > No longer used.
> > 
> > Change-Id: I65a61696060ca19f528066ea587e140798450e36
> > Reviewed-on: https://skia-review.googlesource.com/18132
> > Reviewed-by: Jim Van Verth <jvanverth@google.com>
> > Commit-Queue: Florin Malita <fmalita@chromium.org>
> > 
> 
> TBR=jvanverth@google.com,fmalita@chromium.org,reed@google.com
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> 
> Change-Id: I88a428e942c78b1fc8e70501ba7fdda5727b2ab2
> Reviewed-on: https://skia-review.googlesource.com/18156
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Florin Malita <fmalita@chromium.org>
> 

TBR=mtklein@google.com,jvanverth@google.com,reviews@skia.org,fmalita@chromium.org,reed@google.com
No-Presubmit: true
No-Tree-Checks: true
No-Try: true

Change-Id: Ia6c97a79a6425a28fab49984691505bf89ac9736
Reviewed-on: https://skia-review.googlesource.com/18227
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
10 files changed