Create SkColorSpaceXform to handle color conversions

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
@@ skipping 785 matching lines @@
     }
 
     SkTArray<SkString> colorImages;
     if (!CollectImages(FLAGS_colorImages, &colorImages)) {
         return false;
     }
 
     for (auto colorImage : colorImages) {
         ColorCodecSrc* src = new ColorCodecSrc(colorImage, ColorCodecSrc::kBaseline_Mode);
         push_src("image", "color_codec_baseline", src);
+
+        src = new ColorCodecSrc(colorImage, ColorCodecSrc::kSrcToLinear_Mode);
+        push_src("image", "color_codec_src_to_linear", src);
     }
 
     return true;
 }
 
 static void push_sink(const SkCommandLineConfig& config, Sink* s) {
     SkAutoTDelete<Sink> sink(s);
 
     // Try a simple Src as a canary.  If it fails, skip this sink.
     struct : public Src {
@@ skipping 627 matching lines @@
 #endif
 }
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif