Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkXfermodeImageFilter.cpp

 /*
  * Copyright 2013 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 "SkXfermodeImageFilter.h"
 #include "SkCanvas.h"
 #include "SkDevice.h"
@@ skipping 14 matching lines @@
                                              const CropRect* cropRect,
                                              uint32_t uniqueID)
   : INHERITED(2, inputs, cropRect, uniqueID), fMode(mode) {
     SkSafeRef(fMode);
 }
 
 SkXfermodeImageFilter::~SkXfermodeImageFilter() {
     SkSafeUnref(fMode);
 }
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+SkXfermodeImageFilter::SkXfermodeImageFilter(SkReadBuffer& buffer)
+  : INHERITED(2, buffer) {
+    fMode = buffer.readXfermode();
+}
+#endif
+
 SkFlattenable* SkXfermodeImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 2);
     SkAutoTUnref<SkXfermode> mode(buffer.readXfermode());
     return Create(mode, common.getInput(0), common.getInput(1), &common.cropRect(), common.uniqueID());
 }
 
 void SkXfermodeImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeFlattenable(fMode);
 }
@@ skipping 113 matching lines @@
     paint.addColorProcessor(xferProcessor)->unref();
     context->drawRect(paint, srcRect);
 
     offset->fX = backgroundOffset.fX;
     offset->fY = backgroundOffset.fY;
     WrapTexture(dst, src.width(), src.height(), result);
     return true;
 }
 
 #endif