Add a release procedure to SkMallocPixelRef; remove SkDataPixelRef

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)
-    : INHERITED(info)
-    , fData(data)
-{
-    fData->ref();
-    this->setPreLocked(const_cast<void*>(fData->data()), NULL);
-}
-
-SkDataPixelRef::~SkDataPixelRef() {
-    fData->unref();
-}
-
-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);
-}
-
-SkDataPixelRef::SkDataPixelRef(SkFlattenableReadBuffer& buffer)
-        : INHERITED(buffer, NULL) {
-    fData = buffer.readByteArrayAsData();
-    this->setPreLocked(const_cast<void*>(fData->data()), NULL);
-}