Retire SkShader::kSupports4f_Flag

src/core/SkShader.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 "SkAtomics.h"
 #include "SkBitmapProcShader.h"
 #include "SkColorShader.h"
@@ skipping 280 matching lines @@
         r = SkMulDiv255Round(r, a);
         g = SkMulDiv255Round(g, a);
         b = SkMulDiv255Round(b, a);
     }
     fPMColor = SkPackARGB32(a, r, g, b);
 
     SkColor4f c4 = SkColor4f::FromColor(shader.fColor);
     c4.fA *= rec.fPaint->getAlpha() / 255.0f;
     fPM4f = c4.premul();
 
-    fFlags = kConstInY32_Flag | kSupports4f_Flag;
+    fFlags = kConstInY32_Flag;
     if (255 == a) {
         fFlags |= kOpaqueAlpha_Flag;
     }
 }
 
 void SkColorShader::ColorShaderContext::shadeSpan(int x, int y, SkPMColor span[], int count) {
     sk_memset32(span, fPMColor, count);
 }
 
 void SkColorShader::ColorShaderContext::shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) {
@@ skipping 53 matching lines @@
 #include "SkEmptyShader.h"
 
 void SkEmptyShader::toString(SkString* str) const {
     str->append("SkEmptyShader: (");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif