src/tools/perf/page_sets/tough_image_cases.json

{
  "description": "A collection of image decoding performance tests",
  "pages": [
    {"url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?gif"},
    {"url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?jpg"},
    {"url": "file:///../../../chrome/test/data/image_decoding/image_decoding.html?png"}
  ]
}