Revert of De-proc Color32

src/effects/SkColorFilters.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlitRow.h"
 #include "SkColorFilter.h"
 #include "SkColorPriv.h"
@@ skipping 22 matching lines @@
             return kAlphaUnchanged_Flag;
         default:
             break;
     }
     return 0;
 }
 
 void SkModeColorFilter::filterSpan(const SkPMColor shader[], int count, SkPMColor result[]) const {
     SkPMColor       color = fPMColor;
     SkXfermodeProc  proc = fProc;
-
+    
     for (int i = 0; i < count; i++) {
         result[i] = proc(color, shader[i]);
     }
 }
 
 void SkModeColorFilter::flatten(SkWriteBuffer& buffer) const {
     buffer.writeColor(fColor);
     buffer.writeUInt(fMode);
 }
 
@@ skipping 333 matching lines @@
     void filterSpan(const SkPMColor shader[], int count, SkPMColor result[]) const override {
         sk_memset32(result, this->getPMColor(), count);
     }
 
 private:
     typedef SkModeColorFilter INHERITED;
 };
 
 class SrcOver_SkModeColorFilter : public SkModeColorFilter {
 public:
-    SrcOver_SkModeColorFilter(SkColor color) : INHERITED(color, SkXfermode::kSrcOver_Mode) { }
+    SrcOver_SkModeColorFilter(SkColor color)
+            : INHERITED(color, SkXfermode::kSrcOver_Mode) {
+        fColor32Proc = SkBlitRow::ColorProcFactory();
+    }
 
     void filterSpan(const SkPMColor shader[], int count, SkPMColor result[]) const override {
-        SkBlitRow::Color32(result, shader, count, this->getPMColor());
+        fColor32Proc(result, shader, count, this->getPMColor());
     }
 
 private:
+
+    SkBlitRow::ColorProc fColor32Proc;
+
     typedef SkModeColorFilter INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkColorFilter* SkColorFilter::CreateModeFilter(SkColor color, SkXfermode::Mode mode) {
     if (!SkIsValidMode(mode)) {
         return NULL;
     }
 
@@ skipping 52 matching lines @@
                     byte_to_scale(SkColorGetG(mul)),
                     byte_to_scale(SkColorGetB(mul)),
                     1);
     matrix.postTranslate(SkIntToScalar(SkColorGetR(add)),
                          SkIntToScalar(SkColorGetG(add)),
                          SkIntToScalar(SkColorGetB(add)),
                          0);
     return SkColorMatrixFilter::Create(matrix);
 }