Support the non-native (RGBA/BGRA) swizzle

src/codec/SkBmpRLECodec.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 "SkBmpCodec.h"
 #include "SkColorTable.h"
 #include "SkImageInfo.h"
@@ skipping 40 matching lines @@
     SkCodec::Result prepareToDecode(const SkImageInfo& dstInfo,
             const SkCodec::Options& options, SkPMColor inputColorPtr[],
             int* inputColorCount) override;
 
 private:
 
     /*
      * Creates the color table
      * Sets colorCount to the new color count if it is non-nullptr
      */
-    bool createColorTable(int* colorCount);
+    bool createColorTable(SkColorType dstColorType, int* colorCount);
 
     bool initializeStreamBuffer();
 
     /*
      * Before signalling kIncompleteInput, we should attempt to load the
      * stream buffer with additional data.
      *
      * @return the number of bytes remaining in the stream buffer after
      *         attempting to read more bytes from the stream
      */
@@ skipping 35 matching lines @@
     SkAutoTDelete<SkSampler>            fSampler;
 
     // Scanline decodes allow the client to ask for a single scanline at a time.
     // This can be tricky when the RLE encoding instructs the decoder to jump down
     // multiple lines.  This field keeps track of lines that need to be skipped
     // on subsequent calls to decodeRows().
     int                                 fLinesToSkip;
 
     typedef SkBmpCodec INHERITED;
 };