[
  {
    "prefix": "gpu",
    "base": "fast/canvas",
    "args": ["--enable-accelerated-2d-canvas",
             "--disable-display-list-2d-canvas"]
  },
  {
    "prefix": "display_list_2d_canvas",
    "base": "fast/canvas",
    "args": ["--force-display-list-2d-canvas"]
  },
  {
    "prefix": "threaded",
    "base": "fast/canvas-toBlob",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "compositing/visibility",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "fast/compositorworker",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "compositing/webgl",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "prefer_compositing_to_lcd_text",
    "base": "compositing/overflow",
    "args": ["--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "prefer_compositing_to_lcd_text",
    "base": "scrollbars",
    "args": ["--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "threaded",
    "base": "animations",
    "args": ["--enable-threaded-compositing",
             "--disable-composited-antialiasing"]
  },
  {
    "prefix": "threaded",
    "base": "transitions",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "fast/scroll-behavior",
    "args": ["--enable-threaded-compositing",
             "--enable-prefer-compositing-to-lcd-text"]
  },
  {
    "prefix": "stable",
    "base": "webexposed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "http/tests/serviceworker/webexposed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "animations-unprefixed",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "media/stable",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "fast/events/eventlisteneroptions",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "android",
    "base": "fullscreen",
    "args": ["--enable-threaded-compositing",
             "--enable-fixed-position-compositing", "--enable-prefer-compositing-to-lcd-text",
             "--enable-composited-scrolling-for-frames", "--enable-gesture-tap-highlight", "--enable-pinch",
             "--force-overlay-fullscreen-video", "--enable-overlay-scrollbars", "--enable-overscroll-notifications",
             "--enable-fixed-layout", "--enable-viewport", "--disable-canvas-aa",
             "--disable-composited-antialiasing"]
  },
  {
    "prefix": "stable",
    "base": "fast/css3-text/css3-text-decoration/stable",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "stable",
    "base": "web-animations-api",
    "args": ["--stable-release-mode"]
  },
  {
    "prefix": "without-smil",
    "base": "svg/animations/exposed",
    "args": ["--disable-blink-features=smil"]
  },
  {
    "prefix": "linux-subpixel",
    "base": "platform/linux/fast/text/subpixel",
    "args": ["--enable-webkit-text-subpixel-positioning"]
  },
  {
    "prefix": "threaded",
    "base": "printing",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "rootlayerscrolls",
    "base": "fast/scrolling",
    "args": ["--root-layer-scrolls"]
  },
  {
    "prefix": "rootlayerscrolls",
    "base": "fast/history/scroll-restoration",
    "args": ["--root-layer-scrolls"]
  },
  {
    "prefix": "rootlayerscrolls",
    "base": "scrollbars",
    "args": ["--root-layer-scrolls"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/scroll-behavior",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/scrolling",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "scroll_customization",
    "base": "fast/events/touch",
    "args": ["--enable-blink-features=ScrollCustomization"]
  },
  {
    "prefix": "smoothscrolling",
    "base": "fast/events/touch/gesture",
    "args": ["--enable-smooth-scrolling"]
  },
  {
    "prefix": "pointerevent",
    "base": "fast/events",
    "args": ["--enable-blink-features=PointerEvent"]
  },
  {
    "prefix": "pointerevent",
    "base": "imported/web-platform-tests/pointerevents",
    "args": ["--enable-blink-features=PointerEvent"]
  },
  {
    "prefix": "mediasession",
    "base": "media/mediasession",
    "args": ["--enable-blink-features=MediaSession"]
  },
  {
    "prefix": "sharedarraybuffer",
    "base": "fast/workers",
    "args": ["--js-flags=--harmony-sharedarraybuffer",
             "--enable-blink-features=SharedArrayBuffer"]
  },
  {
    "prefix": "trustedeventsdefaultaction",
    "base": "fast/events",
    "args": ["--enable-blink-features=TrustedEventsDefaultAction"]
  },
  {
    "prefix": "threaded",
    "base": "fast/idle-callback",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "threaded",
    "base": "inspector/tracing",
    "args": ["--enable-threaded-compositing"]
  },
  {
    "prefix": "spv2",
    "base": "compositing",
    "args": ["--enable-slimming-paint-v2"]
  },
  {
    "prefix": "spv2",
    "base": "fast/block",
    "args": ["--enable-slimming-paint-v2"]
  },
  {
    "prefix": "spv2",
    "base": "fast/borders",
    "args": ["--enable-slimming-paint-v2"]
  },
  {
    "prefix": "spv2",
    "base": "paint",
    "args": ["--enable-slimming-paint-v2"]
  },
  {
    "prefix": "spv2",
    "base": "svg",
    "args": ["--enable-slimming-paint-v2"]
  },
  {
    "prefix": "scalefactor200",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=2"]
  },
  {
    "prefix": "scalefactor150",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=1.5"]
  },
  {
    "prefix": "scalefactor200withzoom",
    "base": "fast/hidpi/static",
    "args": ["--force-device-scale-factor=2", "--enable-use-zoom-for-dsf"]
  }
]