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/SampleAll.cpp b/samplecode/SampleAll.cpp
index ea7d508..e1b8593 100644
--- a/samplecode/SampleAll.cpp
+++ b/samplecode/SampleAll.cpp
@@ -208,10 +208,13 @@
         paint->setRasterizer(rastBuilder.detach());
     }
 
-    paint->setMaskFilter(SkEmbossMaskFilter::Make(
-                SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3)),
-                { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
+#ifdef SK_SUPPORT_LEGACY_EMBOSSMASKFILTER
+    SkScalar dir[] = { SK_Scalar1, SK_Scalar1, SK_Scalar1 };
+    paint->setMaskFilter(SkBlurMaskFilter::MakeEmboss(
+                SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(3)), dir,
+                SK_Scalar1/4, SkIntToScalar(4)));
     paint->setColor(SK_ColorBLUE);
+#endif
 }
 
 class DemoView : public SampleView {