Revert "Switch back to non-SkSL matrix color filter for all clients"

This reverts commit b2b5f2beaafe750de61fdc28a6e6972374fb3988.

Reason for revert: Google3 staging

Original change's description:
> Switch back to non-SkSL matrix color filter for all clients
>
> Chrome never made the switch, and if we want to support stripping SkSL
> in CPU builds, we'll want to backtrack here a bit.
>
> Change-Id: I46aba6d0bddd09f6c37a90d9b996e3e28ce66c68
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419157
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Ib1acea693696422b421b878d78963015e38af69c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419777
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>
diff --git a/src/core/SkColorFilter_Matrix.cpp b/src/core/SkColorFilter_Matrix.cpp
index 5b32992..53ec044 100644
--- a/src/core/SkColorFilter_Matrix.cpp
+++ b/src/core/SkColorFilter_Matrix.cpp
@@ -156,7 +156,7 @@
     if (!sk_floats_are_finite(array, 20)) {
         return nullptr;
     }
-#if 1
+#if defined(SK_SUPPORT_LEGACY_RUNTIME_EFFECTS)
     return sk_make_sp<SkColorFilter_Matrix>(array, domain);
 #else
     const bool alphaUnchanged = SkScalarNearlyEqual(array[15], 0)