Revert of Add SkSpecialImage::extractSubset & NewFromPixmap

src/core/SkAutoPixmapStorage.cpp

Index: src/core/SkAutoPixmapStorage.cpp
diff --git a/src/core/SkAutoPixmapStorage.cpp b/src/core/SkAutoPixmapStorage.cpp
deleted file mode 100644
index 3be28a94c428984a7a5665fed1e76f19890b855b..0000000000000000000000000000000000000000
--- a/src/core/SkAutoPixmapStorage.cpp
+++ /dev/null
@@ -1,64 +0,0 @@
-
-/*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkAutoPixmapStorage.h"
-#include "SkData.h"
-
-SkAutoPixmapStorage::SkAutoPixmapStorage() : fStorage(nullptr) {}
-
-SkAutoPixmapStorage::~SkAutoPixmapStorage() {
-    this->freeStorage();
-}
-
-size_t SkAutoPixmapStorage::AllocSize(const SkImageInfo& info, size_t* rowBytes) {
-    size_t rb = info.minRowBytes();
-    if (rowBytes) {
-        *rowBytes = rb;
-    }
-    return info.getSafeSize(rb);
-}
-
-bool SkAutoPixmapStorage::tryAlloc(const SkImageInfo& info) {
-    this->freeStorage();
-
-    size_t rb;
-    size_t size = AllocSize(info, &rb);
-    if (0 == size) {
-        return false;
-    }
-    void* pixels = sk_malloc_flags(size, 0);
-    if (nullptr == pixels) {
-        return false;
-    }
-    this->reset(info, pixels, rb);
-    fStorage = pixels;
-    return true;
-}
-
-void SkAutoPixmapStorage::alloc(const SkImageInfo& info) {
-    if (!this->tryAlloc(info)) {
-        sk_throw();
-    }
-}
-
-const SkData* SkAutoPixmapStorage::detachPixelsAsData() {
-    if (!fStorage) {
-        return nullptr;
-    }
-
-    auto data = SkData::MakeFromMalloc(fStorage, this->getSafeSize());
-    fStorage = nullptr;
-    this->INHERITED::reset();
-
-    return data.release();
-}
-
-void SkAutoPixmapStorage::release() {
-    fStorage = nullptr;
-    this->INHERITED::reset();
-}