remove shadeSpan16 from shader

src/core/SkBitmapProcState_shaderproc.h

-
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMathPriv.h"
 
 #define SCALE_FILTER_NAME       MAKENAME(_filter_DX_shaderproc)
 
 // Can't be static in the general case because some of these implementations
 // will be defined and referenced in different object files.
-void SCALE_FILTER_NAME(const void* sIn, int x, int y,
-                       DSTTYPE* SK_RESTRICT colors, int count);
+void SCALE_FILTER_NAME(const void* sIn, int x, int y, SkPMColor* SK_RESTRICT colors, int count);
 
-void SCALE_FILTER_NAME(const void* sIn, int x, int y,
-                       DSTTYPE* SK_RESTRICT colors, int count) {
+void SCALE_FILTER_NAME(const void* sIn, int x, int y, SkPMColor* SK_RESTRICT colors, int count) {
     const SkBitmapProcState& s = *static_cast<const SkBitmapProcState*>(sIn);
     SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
                              SkMatrix::kScale_Mask)) == 0);
     SkASSERT(s.fInvKy == 0);
     SkASSERT(count > 0 && colors != nullptr);
     SkASSERT(s.fFilterLevel != kNone_SkFilterQuality);
     SkDEBUGCODE(CHECKSTATE(s);)
 
     const unsigned maxX = s.fPixmap.width() - 1;
     const SkFixed oneX = s.fFilterOneX;
@@ skipping 48 matching lines @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #undef TILEX_PROCF
 #undef TILEY_PROCF
 #undef TILEX_LOW_BITS
 #undef TILEY_LOW_BITS
 #undef MAKENAME
 #undef SRCTYPE
-#undef DSTTYPE
 #undef CHECKSTATE
 #undef SRC_TO_FILTER
 #undef FILTER_TO_DST
 #undef PREAMBLE
 #undef POSTAMBLE
 
 #undef SCALE_FILTER_NAME