Move SkPackBits to src/effects.

include/core/SkPackBits.h

-
-/*
- * Copyright 2008 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#ifndef SkPackBits_DEFINED
-#define SkPackBits_DEFINED
-
-#include "SkTypes.h"
-
-class SkPackBits {
-public:
-    /** Given the number of 8bit values that will be passed to Pack8,
-        returns the worst-case size needed for the dst[] buffer.
-    */
-    static size_t ComputeMaxSize8(int count);
-
-    /** Write the src array into a packed format. The packing process may end
-        up writing more bytes than it read, so dst[] must be large enough.
-        @param src      Input array of 8bit values
-        @param srcSize  Number of entries in src[]
-        @param dst      Buffer (allocated by caller) to write the packed data
-                        into
-        @param dstSize  Number of bytes in the output buffer.
-        @return the number of bytes written to dst[]
-    */
-    static size_t Pack8(const uint8_t src[], size_t srcSize, uint8_t dst[],
-                        size_t dstSize);
-
-    /** Unpack the data in src[], and expand it into dst[]. The src[] data was
-        written by a previous call to Pack8.
-        @param src      Input data to unpack, previously created by Pack8.
-        @param srcSize  Number of bytes of src to unpack
-        @param dst      Buffer (allocated by caller) to expand the src[] into.
-        @param dstSize  Number of bytes in the output buffer.
-        @return the number of bytes written into dst.
-    */
-    static int Unpack8(const uint8_t src[], size_t srcSize, uint8_t dst[],
-                       size_t dstSize);
-};
-
-#endif