Add SkColorSpaceXform to the public API

src/codec/SkJpegCodec.cpp

 /*
  * 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 "SkCodec.h"
 #include "SkMSAN.h"
 #include "SkJpegCodec.h"
@@ skipping 499 matching lines @@
         sk_msan_mark_initialized(decodeDst, decodeDst + srcRowBytes, "skbug.com/4550");
         if (0 == lines) {
             return y;
         }
 
         if (fSwizzler) {
             fSwizzler->swizzle(swizzleDst, decodeDst);
         }
 
         if (fColorXform) {
-            fColorXform->apply(dst, swizzleDst, dstWidth, select_xform_format(dstInfo.colorType()),
-                               SkColorSpaceXform::kRGBA_8888_ColorFormat, kOpaque_SkAlphaType);
+            SkAssertResult(fColorXform->apply(select_xform_format(dstInfo.colorType()), dst,
+                                              SkColorSpaceXform::kRGBA_8888_ColorFormat, swizzleDst,
+                                              dstWidth, kOpaque_SkAlphaType));
             dst = SkTAddOffset<void>(dst, rowBytes);
         }
 
         decodeDst = SkTAddOffset<JSAMPLE>(decodeDst, decodeDstRowBytes);
         swizzleDst = SkTAddOffset<uint32_t>(swizzleDst, swizzleDstRowBytes);
     }
 
     return count;
 }
 
@@ skipping 393 matching lines @@
 
         JDIMENSION linesRead = jpeg_read_raw_data(dinfo, yuv, numRowsPerBlock);
         if (linesRead < remainingRows) {
             // FIXME: Handle incomplete YUV decodes without signalling an error.
             return kInvalidInput;
         }
     }
 
     return kSuccess;
 }