{
  "dom.bluetooth.enabled": false,
  "dom.bluetooth.testing.enabled": false,
  "dom.compositionevent.enabled": false,
  "dom.customelements.enabled": false,
  "dom.forcetouch.enabled": false,
  "dom.gamepad.enabled": false,
  "dom.mouseevent.which.enabled": false,
  "dom.mozbrowser.enabled": false,
  "dom.mutation_observer.enabled": false,
  "dom.permissions.enabled": false,
  "dom.permissions.testing.allowed_in_nonsecure_contexts": false,
  "dom.serviceworker.timeout_seconds": 60,
  "dom.servoparser.async_html_tokenizer.enabled": false,
  "dom.testable_crash.enabled": false,
  "dom.testbinding.enabled": false,
  "dom.webvr.enabled": false,
  "dom.webvr.event_polling_interval": 500,
  "js.asmjs.enabled": true,
  "js.asyncstack.enabled": false,
  "js.baseline.enabled": true,
  "js.baseline.unsafe_eager_compilation.enabled": false,
  "js.discard_system_source.enabled": false,
  "js.dump_stack_on_debuggee_would_run.enabled": false,
  "js.ion.enabled": true,
  "js.ion.offthread_compilation.enabled": true,
  "js.ion.unsafe_eager_compilation.enabled": false,
  "js.mem.gc.allocation_threshold_mb": 30,
  "js.mem.gc.compacting.enabled": true,
  "js.mem.gc.decommit_threshold_mb": 32,
  "js.mem.gc.dynamic_heap_growth.enabled": true,
  "js.mem.gc.dynamic_mark_slice.enabled": true,
  "js.mem.gc.empty_chunk_count_max": 30,
  "js.mem.gc.empty_chunk_count_min": 1,
  "js.mem.gc.high_frequency_heap_growth_max": 300,
  "js.mem.gc.high_frequency_heap_growth_min": 150,
  "js.mem.gc.high_frequency_high_limit_mb": 500,
  "js.mem.gc.high_frequency_low_limit_mb": 100,
  "js.mem.gc.high_frequency_time_limit_ms": 1000,
  "js.mem.gc.incremental.enabled": true,
  "js.mem.gc.incremental.slice_ms": 10,
  "js.mem.gc.low_frequency_heap_growth": 150,
  "js.mem.gc.per_compartment.enabled": true,
  "js.mem.gc.refresh_frame_slices.enabled": true,
  "js.mem.gc.zeal.frequency": 100,
  "js.mem.gc.zeal.level": 0,
  "js.mem.high_water_mark": 128,
  "js.mem.max": -1,
  "js.native_regexp.enabled": true,
  "js.parallel_parsing.enabled": true,
  "js.shared_memory.enabled": true,
  "js.strict.debug.enabled": false,
  "js.strict.enabled": false,
  "js.throw_on_asmjs_validation_failure.enabled": false,
  "js.throw_on_debuggee_would_run.enabled": false,
  "js.werror.enabled": false,
  "layout.animations.test.enabled": false,
  "layout.column-count.enabled": false,
  "layout.column-gap.enabled": false,
  "layout.column-width.enabled": false,
  "layout.columns.enabled": false,
  "layout.text-orientation.enabled": false,
  "layout.viewport.enabled": false,
  "layout.writing-mode.enabled": false,
  "network.mime.sniff": false,
  "session-history.max-length": 20,
  "shell.builtin-key-shortcuts.enabled": true,
  "shell.homepage": "https://servo.org",
  "shell.keep_screen_on.enabled": false,
  "shell.native-orientation": "both",
  "shell.native-titlebar.enabled": true,
  "webgl.testing.context_creation_error": false
}