Create a scanline decoder without creating a codec

src/codec/SkCodec.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBmpCodec.h"
 #include "SkCodec.h"
 #include "SkData.h"
@@ skipping 122 matching lines @@
 }
 
 SkCodec::Result SkCodec::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes) {
     SkASSERT(kIndex_8_SkColorType != info.colorType());
     if (kIndex_8_SkColorType == info.colorType()) {
         return kInvalidConversion;
     }
     return this->getPixels(info, pixels, rowBytes, NULL, NULL, NULL);
 }
 
-SkScanlineDecoder* SkCodec::getScanlineDecoder(const SkImageInfo& dstInfo, const Options* options,
-        SkPMColor ctable[], int* ctableCount) {
-
-    // Set options.
-    Options optsStorage;
-    if (NULL == options) {
-        options = &optsStorage;
-    }
-
-    return this->onGetScanlineDecoder(dstInfo, *options, ctable, ctableCount);
-}
-
-SkScanlineDecoder* SkCodec::getScanlineDecoder(const SkImageInfo& dstInfo) {
-    SkASSERT(kIndex_8_SkColorType != dstInfo.colorType());
-    if (kIndex_8_SkColorType == dstInfo.colorType()) {
-        return NULL;
-    }
-    return this->getScanlineDecoder(dstInfo, NULL, NULL, NULL);
-}