Revert of Add SkSpecialImage::extractSubset & NewFromPixmap

src/core/SkAutoPixmapStorage.h

Index: src/core/SkAutoPixmapStorage.h
diff --git a/src/core/SkAutoPixmapStorage.h b/src/core/SkAutoPixmapStorage.h
deleted file mode 100644
index 4379b13d2482ade8ed7c5f8bc48751be460caee6..0000000000000000000000000000000000000000
--- a/src/core/SkAutoPixmapStorage.h
+++ /dev/null
@@ -1,87 +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.
- */
-
-#ifndef SkAutoPixmapStorage_DEFINED
-#define SkAutoPixmapStorage_DEFINED
-
-#include "SkPixmap.h"
-
-class SK_API SkAutoPixmapStorage : public SkPixmap {
-public:
-    SkAutoPixmapStorage();
-    ~SkAutoPixmapStorage();
-
-    /**
-    *  Try to allocate memory for the pixels needed to match the specified Info. On success
-    *  return true and fill out the pixmap to point to that memory. The storage will be freed
-    *  when this object is destroyed, or if another call to tryAlloc() or alloc() is made.
-    *
-    *  On failure, return false and reset() the pixmap to empty.
-    */
-    bool tryAlloc(const SkImageInfo&);
-
-    /**
-    *  Allocate memory for the pixels needed to match the specified Info and fill out the pixmap
-    *  to point to that memory. The storage will be freed when this object is destroyed,
-    *  or if another call to tryAlloc() or alloc() is made.
-    *
-    *  If the memory cannot be allocated, calls sk_throw().
-    */
-    void alloc(const SkImageInfo&);
-
-    /**
-    * Gets the size and optionally the rowBytes that would be allocated by SkAutoPixmapStorage if
-    * alloc/tryAlloc was called.
-    */
-    static size_t AllocSize(const SkImageInfo& info, size_t* rowBytes);
-
-    /**
-    *  Returns an SkData object wrapping the allocated pixels memory, and resets the pixmap.
-    *  If the storage hasn't been allocated, the result is NULL.
-    */
-    const SkData* SK_WARN_UNUSED_RESULT detachPixelsAsData();
-
-    /**
-    * Whereas 'reset' frees the backing memory and then clears the SkPixmap,
-    * this entry point disowns the backing memory before clearing so the memory
-    * isn't freed. It can be used when the Pixmap has been installed into
-    * an SkBitmap and the SkBitmap should manage the memory's lifetime.
-    */
-    void release();
-
-    // We wrap these so we can clear our internal storage
-
-    void reset() {
-        this->freeStorage();
-        this->INHERITED::reset();
-    }
-    void reset(const SkImageInfo& info, const void* addr, size_t rb, SkColorTable* ctable = NULL) {
-        this->freeStorage();
-        this->INHERITED::reset(info, addr, rb, ctable);
-    }
-    void reset(const SkImageInfo& info) {
-        this->freeStorage();
-        this->INHERITED::reset(info);
-    }
-    bool SK_WARN_UNUSED_RESULT reset(const SkMask& mask) {
-        this->freeStorage();
-        return this->INHERITED::reset(mask);
-    }
-
-private:
-    void*   fStorage;
-
-    void freeStorage() {
-        sk_free(fStorage);
-        fStorage = nullptr;
-    }
-
-    typedef SkPixmap INHERITED;
-};
-
-#endif