Add gamma_correct option field to dm.json

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 999 matching lines @@
             });
         }
         done(task.sink.tag.c_str(), task.src.tag.c_str(), task.src.options.c_str(), name.c_str());
     }
 
     static void WriteToDisk(const Task& task,
                             SkString md5,
                             const char* ext,
                             SkStream* data, size_t len,
                             const SkBitmap* bitmap) {
+        bool gammaCorrect = false;
+        if (bitmap) {
+            gammaCorrect = bitmap->profileType() == kSRGB_SkColorProfileType
+                        || bitmap->  colorType() == kRGBA_F16_SkColorType;
+        }
+
         JsonWriter::BitmapResult result;
         result.name          = task.src->name();
         result.config        = task.sink.tag;
         result.sourceType    = task.src.tag;
         result.sourceOptions = task.src.options;
         result.ext           = ext;
+        result.gammaCorrect  = gammaCorrect;
         result.md5           = md5;
         JsonWriter::AddBitmapResult(result);
 
         // If an MD5 is uninteresting, we want it noted in the JSON file,
         // but don't want to dump it out as a .png (or whatever ext is).
         if (gUninterestingHashes.contains(md5)) {
             return;
         }
 
         const char* dir = FLAGS_writePath[0];
@@ skipping 299 matching lines @@
                                                            Reporter* reporter,
                                                            GrContextFactory* factory);
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif