Add gamma_correct option field to dm.json

E.g.

{
   "max_rss_MB" : 23,
   "results" : [
      {
         "key" : {
            "config" : "pdf",
            "name" : "gamma",
            "source_type" : "gm"
         },
         "md5" : "c5dfb531f4d76c77c3305b6a04733262",
         "options" : {
            "ext" : "pdf",
            "gamma_correct" : false
         }
      },
      {
         "key" : {
            "config" : "8888",
            "name" : "gamma",
            "source_type" : "gm"
         },
         "md5" : "6177860ed24106446d3a9087527e67bf",
         "options" : {
            "ext" : "png",
            "gamma_correct" : false
         }
      },
      {
         "key" : {
            "config" : "f16",
            "name" : "gamma",
            "source_type" : "gm"
         },
         "md5" : "213f80145953ecd4c71e0612447b2ad9",
         "options" : {
            "ext" : "png",
            "gamma_correct" : true
         }
      }
   ]
}

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1741973002

Review URL: https://codereview.chromium.org/1741973002
3 files changed