Revert of remvoe duplicate impl for SkImageInfo flattening

src/image/SkDataPixelRef.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDataPixelRef.h"
 #include "SkData.h"
 #include "SkFlattenableBuffers.h"
 
-SkDataPixelRef::SkDataPixelRef(const SkImageInfo& info,
-                               SkData* data, size_t rowBytes)
-    : INHERITED(info)
-    , fData(data)
-    , fRB(rowBytes) 
-{
+SkDataPixelRef::SkDataPixelRef(SkData* data) : fData(data) {
     fData->ref();
-    this->setPreLocked(const_cast<void*>(fData->data()), rowBytes, NULL);
+    this->setPreLocked(const_cast<void*>(fData->data()), NULL);
 }
 
 SkDataPixelRef::~SkDataPixelRef() {
     fData->unref();
 }
 
-bool SkDataPixelRef::onNewLockPixels(LockRec* rec) {
-    rec->fPixels = const_cast<void*>(fData->data());
-    rec->fColorTable = NULL;
-    rec->fRowBytes = fRB;
-    return true;
+void* SkDataPixelRef::onLockPixels(SkColorTable** ct) {
+    *ct = NULL;
+    return const_cast<void*>(fData->data());
 }
 
 void SkDataPixelRef::onUnlockPixels() {
     // nothing to do
 }
 
 size_t SkDataPixelRef::getAllocatedSizeInBytes() const {
     return fData ? fData->size() : 0;
 }
 
 void SkDataPixelRef::flatten(SkFlattenableWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
-    
     buffer.writeDataAsByteArray(fData);
-    buffer.write32(fRB);
 }
 
 SkDataPixelRef::SkDataPixelRef(SkFlattenableReadBuffer& buffer)
-    : INHERITED(buffer, NULL)
-{
+        : INHERITED(buffer, NULL) {
     fData = buffer.readByteArrayAsData();
-    fRB = buffer.read32();
-    this->setPreLocked(const_cast<void*>(fData->data()), fRB, NULL);
+    this->setPreLocked(const_cast<void*>(fData->data()), NULL);
 }