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

This reverts commit 6b26deb8d6067589ce9b7853ab8e8d39de1a45de.

Reason for revert: GPU bots failing

Original change's description:
> Alloc glyph image correctly for SkMask::k3D_Format.
> 
> This removes the no longer used outside Skia
> SK_SUPPORT_LEGACY_EMBOSSMASKFILTER define, and either deletes the code
> it guards or updates it to use the new emboss mask filter factory. This
> re-enables the code to test the emboss mask filter. Also added is a test
> to ensure that embossed text is drawn correctly, as before this glyphs
> did not allocate the proper amount of memory for the k3D_Format which
> this mask filter produces. This also fixes SkEmbossMask::Emboss to write
> the whole of the mul and add planes to avoid pixel differences and
> MemorySanitizer errors.
> 
> Change-Id: Ib492c72a19d6a27d140e3cd48179a3ca9ce313f5
> Reviewed-on: https://skia-review.googlesource.com/70260
> Commit-Queue: Ben Wagner <bungeman@google.com>
> Reviewed-by: Herb Derby <herb@google.com>

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

Change-Id: I8a9db6c00e0cb84bdd4833474a9ffffa6ecc606c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/70920
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/samplecode/SampleEffects.cpp b/samplecode/SampleEffects.cpp
index 4965498..8c6793e 100644
--- a/samplecode/SampleEffects.cpp
+++ b/samplecode/SampleEffects.cpp
@@ -10,7 +10,6 @@
 #include "SkCanvas.h"
 #include "SkColorMatrixFilter.h"
 #include "SkDiscretePathEffect.h"
-#include "SkEmbossMaskFilter.h"
 #include "SkGradientShader.h"
 #include "SkPaint.h"
 #include "SkView.h"
@@ -29,9 +28,11 @@
 }
 
 static void paint_proc2(SkPaint* paint) {
-    paint->setMaskFilter(SkEmbossMaskFilter::Make(
-            SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)),
-            { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 64, 16 }));
+#ifdef SK_SUPPORT_LEGACY_EMBOSSMASKFILTER
+    SkScalar dir[3] = { 1, 1, 1};
+    paint->setMaskFilter(
+            SkBlurMaskFilter::MakeEmboss(SkBlurMask::ConvertRadiusToSigma(1), dir, 0.1f, 0.05f));
+#endif
 }
 
 static void paint_proc3(SkPaint* paint) {