Revert "Implementation of image decoding for bmp files, in accordance with the new API."

src/codec/SkMasks.h

-/*
- * 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 "SkTypes.h"
-
-/*
- *
- * Contains useful mask routines for SkMaskSwizzler
- *
- */
-class SkMasks {
-public:
-
-    /*
-     *
-     * Input bit masks format
-     *
-     */
-    struct InputMasks {
-        uint32_t red;
-        uint32_t green;
-        uint32_t blue;
-        uint32_t alpha;
-    };
-
-    /*
-     *
-     * Contains all of the information for a single mask
-     *
-     */
-     struct MaskInfo {
-        uint32_t mask;
-        uint32_t shift;
-        uint32_t size;
-     };
-
-    /*
-     *
-     * Create the masks object
-     *
-     */
-    static SkMasks* CreateMasks(InputMasks masks, uint32_t bpp);
-
-    /*
-     *
-     * Get a color component
-     *
-     */
-    uint8_t getRed(uint32_t pixel);
-    uint8_t getGreen(uint32_t pixel);
-    uint8_t getBlue(uint32_t pixel);
-    uint8_t getAlpha(uint32_t pixel);
-
-    /*
-     *
-     * Getter for the alpha mask
-     * The alpha mask may be used in other decoding modes
-     *
-     */
-     uint32_t getAlphaMask() {
-        return fAlpha.mask;
-     }
-
-private:
-
-    /*
-     *
-     * Constrcutor
-     *
-     */
-    SkMasks(const MaskInfo red, const MaskInfo green, const MaskInfo blue,
-            const MaskInfo alpha);
-
-    const MaskInfo fRed;
-    const MaskInfo fGreen;
-    const MaskInfo fBlue;
-    const MaskInfo fAlpha;
-};