Simplify flattening to just write enough to call the factory

src/core/SkXfermode.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 "SkXfermode.h"
@@ skipping 1220 matching lines @@
     int mode = rand->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode);
 
     return SkNEW_ARGS(XferEffect, (static_cast<SkXfermode::Mode>(mode), NULL));
 }
 
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
 SkProcCoeffXfermode::SkProcCoeffXfermode(SkReadBuffer& buffer) : INHERITED(buffer) {
     uint32_t mode32 = buffer.read32() % SK_ARRAY_COUNT(gProcCoeffs);
     if (mode32 >= SK_ARRAY_COUNT(gProcCoeffs)) {
         // out of range, just set to something harmless
         mode32 = SkXfermode::kSrcOut_Mode;
     }
     fMode = (SkXfermode::Mode)mode32;
 
     const ProcCoeff& rec = gProcCoeffs[fMode];
     fProc = rec.fProc;
     // these may be valid, or may be CANNOT_USE_COEFF
     fSrcCoeff = rec.fSC;
     fDstCoeff = rec.fDC;
 }
+#endif
 
 bool SkProcCoeffXfermode::asMode(Mode* mode) const {
     if (mode) {
         *mode = fMode;
     }
     return true;
 }
 
 bool SkProcCoeffXfermode::asCoeff(Coeff* sc, Coeff* dc) const {
     if (CANNOT_USE_COEFF == fSrcCoeff) {
@@ skipping 689 matching lines @@
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSrcXfermode)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstInXfermode)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstOutXfermode)
 #if !SK_ARM_NEON_IS_NONE
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkNEONProcCoeffXfermode)
 #endif
 #if defined(SK_CPU_X86) && !defined(SK_BUILD_FOR_IOS)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSSE2ProcCoeffXfermode)
 #endif
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END