--- a/dom/bindings/Makefile.in
+++ b/dom/bindings/Makefile.in
@@ -2,17 +2,19 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this file,
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
 EXPORT_LIBRARY   = 1
 
 # Need this to find all our DOM source files.
 include $(topsrcdir)/dom/dom-config.mk
 
-include $(topsrcdir)/dom/webidl/WebIDL.mk
+webidl_base = $(topsrcdir)/dom/webidl
+# Generated by moz.build
+include webidlsrcs.mk
 
 binding_include_path := mozilla/dom
 all_webidl_files = $(webidl_files) $(generated_webidl_files) $(preprocessed_webidl_files)
 # Set exported_binding_headers before adding the test IDL to the mix
 exported_binding_headers := $(subst .webidl,Binding.h,$(all_webidl_files))
 # Set linked_binding_cpp_files before adding the test IDL to the mix
 linked_binding_cpp_files := $(subst .webidl,Binding.cpp,$(all_webidl_files))
 
@@ -188,17 +190,17 @@ all_webidl_files_absolute = $(addprefix 
 CACHE_DIR = _cache
 
 globalgen_dependencies := \
   GlobalGen.py \
   Bindings.conf \
   Configuration.py \
   Codegen.py \
   parser/WebIDL.py \
-  ../webidl/WebIDL.mk \
+  webidlsrcs.mk \
   $(all_webidl_files) \
   $(CACHE_DIR)/.done \
   $(GLOBAL_DEPS) \
   $(NULL)
 
 $(CACHE_DIR)/.done:
 	$(MKDIR) -p $(CACHE_DIR)
 	@$(TOUCH) $@

--- a/dom/bindings/test/Makefile.in
+++ b/dom/bindings/test/Makefile.in
@@ -9,17 +9,17 @@
 ifdef .PYMAKE
 .NOTPARALLEL:
 endif
 
 # Need this to find all our DOM source files.
 include $(topsrcdir)/dom/dom-config.mk
 
 # And need this for $(test_webidl_files)
-include $(topsrcdir)/dom/webidl/WebIDL.mk
+include ../webidlsrcs.mk
 
 # But the webidl actually lives in our parent dir
 test_webidl_files := $(addprefix ../,$(test_webidl_files))
 
 LOCAL_INCLUDES += \
   -I$(topsrcdir)/js/xpconnect/src \
   -I$(topsrcdir)/js/xpconnect/wrappers \
   -I$(topsrcdir)/dom/bindings \

--- a/dom/moz.build
+++ b/dom/moz.build
@@ -69,16 +69,17 @@ PARALLEL_DIRS += [
     'ipc',
     'identity',
     'workers',
     'camera',
     'audiochannel',
     'promise',
     'wappush',
     'telephony',
+    'webidl',
 ]
 
 if CONFIG['OS_ARCH'] == 'WINNT':
     PARALLEL_DIRS += ['plugins/ipc/hangui']
 
 if CONFIG['MOZ_B2G_RIL']:
     PARALLEL_DIRS += [
         'wifi',

deleted file mode 100644
--- a/dom/webidl/WebIDL.mk
+++ /dev/null
@@ -1,550 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-webidl_base = $(topsrcdir)/dom/webidl
-
-generated_webidl_files = \
-  CSS2Properties.webidl \
-  $(NULL)
-
-preprocessed_webidl_files = \
-  Crypto.webidl \
-  Navigator.webidl \
-  $(NULL)
-
-webidl_files = \
-  AnalyserNode.webidl \
-  AnimationEvent.webidl \
-  ArchiveReader.webidl \
-  ArchiveRequest.webidl \
-  Attr.webidl \
-  AudioBuffer.webidl \
-  AudioBufferSourceNode.webidl \
-  AudioContext.webidl \
-  AudioDestinationNode.webidl \
-  AudioListener.webidl \
-  AudioNode.webidl \
-  AudioParam.webidl \
-  AudioProcessingEvent.webidl \
-  AudioStreamTrack.webidl \
-  BarProp.webidl \
-  BatteryManager.webidl \
-  BeforeUnloadEvent.webidl \
-  BiquadFilterNode.webidl \
-  Blob.webidl \
-  BrowserElementDictionaries.webidl \
-  CallEvent.webidl \
-  CallsList.webidl \
-  CameraControl.webidl \
-  CameraManager.webidl \
-  CanvasRenderingContext2D.webidl \
-  CaretPosition.webidl \
-  CDATASection.webidl \
-  ChannelMergerNode.webidl \
-  ChannelSplitterNode.webidl \
-  CharacterData.webidl \
-  ChildNode.webidl \
-  ClientRect.webidl \
-  ClientRectList.webidl \
-  ClipboardEvent.webidl \
-  CommandEvent.webidl \
-  Comment.webidl \
-  CompositionEvent.webidl \
-  ConvolverNode.webidl \
-  Coordinates.webidl \
-  CSS.webidl \
-  CSSPrimitiveValue.webidl \
-  CSSStyleDeclaration.webidl \
-  CSSStyleSheet.webidl \
-  CSSValue.webidl \
-  CSSValueList.webidl \
-  DataContainerEvent.webidl \
-  DelayNode.webidl \
-  DesktopNotification.webidl \
-  DeviceMotionEvent.webidl \
-  DeviceStorage.webidl \
-  Document.webidl \
-  DocumentFragment.webidl \
-  DocumentType.webidl \
-  DOMCursor.webidl \
-  DOMError.webidl \
-  DOMException.webidl \
-  DOMImplementation.webidl \
-  DOMMMIError.webidl \
-  DOMParser.webidl \
-  DOMRequest.webidl \
-  DOMSettableTokenList.webidl \
-  DOMStringMap.webidl \
-  DOMTokenList.webidl \
-  DOMTransaction.webidl \
-  DragEvent.webidl \
-  DummyBinding.webidl \
-  DynamicsCompressorNode.webidl \
-  Element.webidl \
-  Event.webidl \
-  EventHandler.webidl \
-  EventListener.webidl \
-  EventSource.webidl \
-  EventTarget.webidl \
-  File.webidl \
-  FileHandle.webidl \
-  FileList.webidl \
-  FileMode.webidl \
-  FileReader.webidl \
-  FileReaderSync.webidl \
-  FileRequest.webidl \
-  FocusEvent.webidl \
-  FormData.webidl \
-  Function.webidl \
-  GainNode.webidl \
-  Geolocation.webidl \
-  History.webidl \
-  HTMLAnchorElement.webidl \
-  HTMLAppletElement.webidl \
-  HTMLAreaElement.webidl \
-  HTMLAudioElement.webidl \
-  HTMLBaseElement.webidl \
-  HTMLBodyElement.webidl \
-  HTMLBRElement.webidl \
-  HTMLButtonElement.webidl \
-  HTMLCanvasElement.webidl \
-  HTMLCollection.webidl \
-  HTMLDataElement.webidl \
-  HTMLDataListElement.webidl \
-  HTMLDirectoryElement.webidl \
-  HTMLDivElement.webidl \
-  HTMLDListElement.webidl \
-  HTMLDocument.webidl \
-  HTMLElement.webidl \
-  HTMLEmbedElement.webidl \
-  HTMLFieldSetElement.webidl \
-  HTMLFontElement.webidl \
-  HTMLFormElement.webidl \
-  HTMLFrameElement.webidl \
-  HTMLFrameSetElement.webidl \
-  HTMLHeadElement.webidl \
-  HTMLHeadingElement.webidl \
-  HTMLHRElement.webidl \
-  HTMLHtmlElement.webidl \
-  HTMLIFrameElement.webidl \
-  HTMLImageElement.webidl \
-  HTMLInputElement.webidl \
-  HTMLLabelElement.webidl \
-  HTMLLegendElement.webidl \
-  HTMLLIElement.webidl \
-  HTMLLinkElement.webidl \
-  HTMLMapElement.webidl \
-  HTMLMediaElement.webidl \
-  HTMLMenuElement.webidl \
-  HTMLMenuItemElement.webidl \
-  HTMLMetaElement.webidl \
-  HTMLMeterElement.webidl \
-  HTMLModElement.webidl \
-  HTMLObjectElement.webidl \
-  HTMLOListElement.webidl \
-  HTMLOptGroupElement.webidl \
-  HTMLOptionElement.webidl \
-  HTMLOptionsCollection.webidl \
-  HTMLOutputElement.webidl \
-  HTMLParagraphElement.webidl \
-  HTMLParamElement.webidl \
-  HTMLPreElement.webidl \
-  HTMLProgressElement.webidl \
-  HTMLPropertiesCollection.webidl \
-  HTMLQuoteElement.webidl \
-  HTMLScriptElement.webidl \
-  HTMLSelectElement.webidl \
-  HTMLSourceElement.webidl \
-  HTMLSpanElement.webidl \
-  HTMLStyleElement.webidl \
-  HTMLTableCaptionElement.webidl \
-  HTMLTableCellElement.webidl \
-  HTMLTableColElement.webidl \
-  HTMLTableElement.webidl \
-  HTMLTableRowElement.webidl \
-  HTMLTableSectionElement.webidl \
-  HTMLTemplateElement.webidl \
-  HTMLTextAreaElement.webidl \
-  HTMLTimeElement.webidl \
-  HTMLTitleElement.webidl \
-  HTMLTrackElement.webidl \
-  HTMLUListElement.webidl \
-  HTMLVideoElement.webidl \
-  IDBCursor.webidl \
-  IDBDatabase.webidl \
-  IDBFactory.webidl \
-  IDBFileHandle.webidl \
-  IDBIndex.webidl \
-  IDBObjectStore.webidl \
-  IDBOpenDBRequest.webidl \
-  IDBRequest.webidl \
-  IDBTransaction.webidl \
-  IDBVersionChangeEvent.webidl \
-  ImageData.webidl \
-  ImageDocument.webidl \
-  InspectorUtils.webidl \
-  KeyboardEvent.webidl \
-  KeyEvent.webidl \
-  LinkStyle.webidl \
-  LocalMediaStream.webidl \
-  Location.webidl \
-  MediaElementAudioSourceNode.webidl \
-  MediaError.webidl \
-  MediaRecorder.webidl \
-  MediaSource.webidl \
-  MediaStream.webidl \
-  MediaStreamAudioDestinationNode.webidl \
-  MediaStreamAudioSourceNode.webidl \
-  MediaStreamEvent.webidl \
-  MediaStreamTrack.webidl \
-  MessageChannel.webidl \
-  MessageEvent.webidl \
-  MessagePort.webidl \
-  MimeType.webidl \
-  MimeTypeArray.webidl \
-  MobileMessageManager.webidl \
-  MouseEvent.webidl \
-  MouseScrollEvent.webidl \
-  MozActivity.webidl \
-  MozMmsMessage.webidl \
-  MozNamedAttrMap.webidl \
-  MozTimeManager.webidl \
-  MutationEvent.webidl \
-  MutationObserver.webidl \
-  NetDashboard.webidl \
-  Node.webidl \
-  NodeFilter.webidl \
-  NodeIterator.webidl \
-  NodeList.webidl \
-  Notification.webidl \
-  NotifyAudioAvailableEvent.webidl \
-  NotifyPaintEvent.webidl \
-  OfflineAudioCompletionEvent.webidl \
-  OfflineAudioContext.webidl \
-  OfflineResourceList.webidl \
-  OscillatorNode.webidl \
-  PaintRequest.webidl \
-  PaintRequestList.webidl \
-  PannerNode.webidl \
-  ParentNode.webidl \
-  Performance.webidl \
-  PerformanceNavigation.webidl \
-  PerformanceTiming.webidl \
-  PeriodicWave.webidl \
-  PhoneNumberService.webidl \
-  Plugin.webidl \
-  PluginArray.webidl \
-  Position.webidl \
-  PositionError.webidl \
-  ProcessingInstruction.webidl \
-  Promise.webidl \
-  PushManager.webidl \
-  Range.webidl \
-  Rect.webidl \
-  RGBColor.webidl \
-  RTCConfiguration.webidl \
-  RTCDataChannelEvent.webidl \
-  RTCIceCandidate.webidl \
-  RTCPeerConnection.webidl \
-  RTCPeerConnectionIceEvent.webidl \
-  RTCSessionDescription.webidl \
-  Screen.webidl \
-  ScriptProcessorNode.webidl \
-  ScrollAreaEvent.webidl \
-  SettingsManager.webidl \
-  SimpleGestureEvent.webidl \
-  SourceBuffer.webidl \
-  SourceBufferList.webidl \
-  StyleSheet.webidl \
-  SVGAElement.webidl \
-  SVGAltGlyphElement.webidl \
-  SVGAngle.webidl \
-  SVGAnimatedAngle.webidl \
-  SVGAnimatedBoolean.webidl \
-  SVGAnimatedEnumeration.webidl \
-  SVGAnimatedInteger.webidl \
-  SVGAnimatedLength.webidl \
-  SVGAnimatedLengthList.webidl \
-  SVGAnimatedNumber.webidl \
-  SVGAnimatedNumberList.webidl \
-  SVGAnimatedPathData.webidl \
-  SVGAnimatedPoints.webidl \
-  SVGAnimatedPreserveAspectRatio.webidl \
-  SVGAnimatedRect.webidl \
-  SVGAnimatedString.webidl \
-  SVGAnimatedTransformList.webidl \
-  SVGAnimateElement.webidl \
-  SVGAnimateMotionElement.webidl \
-  SVGAnimateTransformElement.webidl \
-  SVGAnimationElement.webidl \
-  SVGCircleElement.webidl \
-  SVGClipPathElement.webidl \
-  SVGComponentTransferFunctionElement.webidl \
-  SVGDefsElement.webidl \
-  SVGDescElement.webidl \
-  SVGDocument.webidl \
-  SVGElement.webidl \
-  SVGEllipseElement.webidl \
-  SVGFEBlendElement.webidl \
-  SVGFEColorMatrixElement.webidl \
-  SVGFEComponentTransferElement.webidl \
-  SVGFECompositeElement.webidl \
-  SVGFEConvolveMatrixElement.webidl \
-  SVGFEDiffuseLightingElement.webidl \
-  SVGFEDisplacementMapElement.webidl \
-  SVGFEDistantLightElement.webidl \
-  SVGFEFloodElement.webidl \
-  SVGFEFuncAElement.webidl \
-  SVGFEFuncBElement.webidl \
-  SVGFEFuncGElement.webidl \
-  SVGFEFuncRElement.webidl \
-  SVGFEGaussianBlurElement.webidl \
-  SVGFEImageElement.webidl \
-  SVGFEMergeElement.webidl \
-  SVGFEMergeNodeElement.webidl \
-  SVGFEMorphologyElement.webidl \
-  SVGFEOffsetElement.webidl \
-  SVGFEPointLightElement.webidl \
-  SVGFESpecularLightingElement.webidl \
-  SVGFESpotLightElement.webidl \
-  SVGFETileElement.webidl \
-  SVGFETurbulenceElement.webidl \
-  SVGFilterElement.webidl \
-  SVGFilterPrimitiveStandardAttributes.webidl \
-  SVGFitToViewBox.webidl \
-  SVGForeignObjectElement.webidl \
-  SVGGElement.webidl \
-  SVGGradientElement.webidl \
-  SVGGraphicsElement.webidl \
-  SVGImageElement.webidl \
-  SVGLengthList.webidl \
-  SVGLinearGradientElement.webidl \
-  SVGLineElement.webidl \
-  SVGMarkerElement.webidl \
-  SVGMaskElement.webidl \
-  SVGMatrix.webidl \
-  SVGMetadataElement.webidl \
-  SVGMPathElement.webidl \
-  SVGNumberList.webidl \
-  SVGPathElement.webidl \
-  SVGPathSeg.webidl \
-  SVGPathSegList.webidl \
-  SVGPatternElement.webidl \
-  SVGPoint.webidl \
-  SVGPointList.webidl \
-  SVGPolygonElement.webidl \
-  SVGPolylineElement.webidl \
-  SVGPreserveAspectRatio.webidl \
-  SVGRadialGradientElement.webidl \
-  SVGRect.webidl \
-  SVGRectElement.webidl \
-  SVGScriptElement.webidl \
-  SVGSetElement.webidl \
-  SVGStopElement.webidl \
-  SVGStringList.webidl \
-  SVGStyleElement.webidl \
-  SVGSVGElement.webidl \
-  SVGSwitchElement.webidl \
-  SVGSymbolElement.webidl \
-  SVGTests.webidl \
-  SVGTextContentElement.webidl \
-  SVGTextElement.webidl \
-  SVGTextPathElement.webidl \
-  SVGTextPositioningElement.webidl \
-  SVGTitleElement.webidl \
-  SVGTransform.webidl \
-  SVGTransformList.webidl \
-  SVGTSpanElement.webidl \
-  SVGUnitTypes.webidl \
-  SVGURIReference.webidl \
-  SVGUseElement.webidl \
-  SVGViewElement.webidl \
-  SVGZoomAndPan.webidl \
-  SVGZoomEvent.webidl \
-  Telephony.webidl \
-  TelephonyCall.webidl \
-  TelephonyCallGroup.webidl \
-  Text.webidl \
-  TextDecoder.webidl \
-  TextEncoder.webidl \
-  TextTrack.webidl \
-  TextTrackCueList.webidl \
-  TextTrackList.webidl \
-  TimeEvent.webidl \
-  TimeRanges.webidl \
-  Touch.webidl \
-  TouchEvent.webidl \
-  TouchList.webidl \
-  TransitionEvent.webidl \
-  TreeColumns.webidl \
-  TreeWalker.webidl \
-  UIEvent.webidl \
-  UndoManager.webidl \
-  URL.webidl \
-  URLUtils.webidl \
-  URLUtilsReadOnly.webidl \
-  VTTCue.webidl \
-  ValidityState.webidl \
-  VideoPlaybackQuality.webidl \
-  VideoStreamTrack.webidl \
-  WaveShaperNode.webidl \
-  WebComponents.webidl \
-  WebSocket.webidl \
-  WheelEvent.webidl \
-  WifiOptions.webidl \
-  Window.webidl \
-  WorkerLocation.webidl \
-  WorkerNavigator.webidl \
-  XMLDocument.webidl \
-  XMLHttpRequest.webidl \
-  XMLHttpRequestEventTarget.webidl \
-  XMLHttpRequestUpload.webidl \
-  XMLSerializer.webidl \
-  XMLStylesheetProcessingInstruction.webidl \
-  XPathEvaluator.webidl \
-  XULCommandEvent.webidl \
-  XULDocument.webidl \
-  XULElement.webidl \
-  $(NULL)
-
-ifdef MOZ_AUDIO_CHANNEL_MANAGER
-webidl_files += \
-  AudioChannelManager.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_WEBGL
-webidl_files += \
-  WebGLRenderingContext.webidl \
-  WebGL2RenderingContext.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_WEBRTC
-webidl_files += \
-  DataChannel.webidl \
-  MediaStreamList.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_WEBSPEECH
-webidl_files += \
-  SpeechGrammar.webidl \
-  SpeechGrammarList.webidl \
-  SpeechRecognition.webidl \
-  SpeechRecognitionAlternative.webidl \
-  SpeechRecognitionResult.webidl \
-  SpeechRecognitionResultList.webidl \
-  SpeechSynthesis.webidl \
-  SpeechSynthesisEvent.webidl \
-  SpeechSynthesisUtterance.webidl \
-  SpeechSynthesisVoice.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_GAMEPAD
-webidl_files += \
-  Gamepad.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_B2G_RIL
-webidl_files += \
-  MozStkCommandEvent.webidl \
-  MozVoicemail.webidl \
-  $(NULL)
-endif
-
-webidl_files += \
-  BlobEvent.webidl \
-  CloseEvent.webidl \
-  CustomEvent.webidl \
-  DeviceLightEvent.webidl \
-  DeviceOrientationEvent.webidl \
-  DeviceProximityEvent.webidl \
-  DeviceStorageChangeEvent.webidl \
-  DOMTransactionEvent.webidl \
-  ElementReplaceEvent.webidl \
-  HashChangeEvent.webidl \
-  MozApplicationEvent.webidl \
-  MozContactChangeEvent.webidl \
-  MozMmsEvent.webidl \
-  MozSettingsEvent.webidl \
-  MozSmsEvent.webidl \
-  PageTransitionEvent.webidl \
-  PopStateEvent.webidl \
-  PopupBlockedEvent.webidl \
-  ProgressEvent.webidl \
-  RecordErrorEvent.webidl \
-  SmartCardEvent.webidl \
-  StorageEvent.webidl \
-  StyleRuleChangeEvent.webidl \
-  StyleSheetApplicableStateChangeEvent.webidl \
-  StyleSheetChangeEvent.webidl \
-  UserProximityEvent.webidl \
-  $(NULL)
-
-ifdef MOZ_B2G_BT
-webidl_files += \
-  BluetoothAdapter.webidl \
-  BluetoothDevice.webidl \
-  BluetoothDeviceEvent.webidl \
-  BluetoothManager.webidl \
-  BluetoothStatusChangedEvent.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_B2G_RIL
-webidl_files += \
-  CFStateChangeEvent.webidl \
-  DataErrorEvent.webidl \
-  IccCardLockErrorEvent.webidl \
-  MozCellBroadcast.webidl \
-  MozCellBroadcastEvent.webidl \
-  MozEmergencyCbModeEvent.webidl \
-  MozOtaStatusEvent.webidl \
-  MozVoicemailEvent.webidl \
-  MozWifiConnectionInfoEvent.webidl \
-  MozWifiStatusChangeEvent.webidl \
-  USSDReceivedEvent.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_GAMEPAD
-webidl_files += \
-  GamepadAxisMoveEvent.webidl \
-  GamepadButtonEvent.webidl \
-  GamepadEvent.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_WEBSPEECH
-webidl_files += \
-  SpeechRecognitionError.webidl \
-  SpeechRecognitionEvent.webidl \
-  $(NULL)
-endif
-
-ifdef MOZ_B2G_FM
-webidl_files += FMRadio.webidl
-endif
-
-ifdef ENABLE_TESTS
-test_webidl_files := \
-  TestCodeGen.webidl \
-  TestDictionary.webidl \
-  TestExampleGen.webidl \
-  TestJSImplGen.webidl \
-  TestJSImplInheritanceGen.webidl \
-  TestTypedef.webidl \
-  $(NULL)
-else
-test_webidl_files := $(NULL)
-endif
-
-ifdef MOZ_B2G
-webidl_files += \
-  InputMethod.webidl \
-  $(NULL)
-endif

new file mode 100644
--- /dev/null
+++ b/dom/webidl/moz.build
@@ -0,0 +1,538 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+MODULE = 'dom'
+
+GENERATED_WEBIDL_FILES = [
+    'CSS2Properties.webidl',
+]
+
+PREPROCESSED_WEBIDL_FILES = [
+    'Crypto.webidl',
+    'Navigator.webidl',
+]
+
+WEBIDL_FILES = [
+    'AnalyserNode.webidl',
+    'AnimationEvent.webidl',
+    'ArchiveReader.webidl',
+    'ArchiveRequest.webidl',
+    'Attr.webidl',
+    'AudioBuffer.webidl',
+    'AudioBufferSourceNode.webidl',
+    'AudioContext.webidl',
+    'AudioDestinationNode.webidl',
+    'AudioListener.webidl',
+    'AudioNode.webidl',
+    'AudioParam.webidl',
+    'AudioProcessingEvent.webidl',
+    'AudioStreamTrack.webidl',
+    'BarProp.webidl',
+    'BatteryManager.webidl',
+    'BeforeUnloadEvent.webidl',
+    'BiquadFilterNode.webidl',
+    'Blob.webidl',
+    'BrowserElementDictionaries.webidl',
+    'CallEvent.webidl',
+    'CallsList.webidl',
+    'CameraControl.webidl',
+    'CameraManager.webidl',
+    'CanvasRenderingContext2D.webidl',
+    'CaretPosition.webidl',
+    'CDATASection.webidl',
+    'ChannelMergerNode.webidl',
+    'ChannelSplitterNode.webidl',
+    'CharacterData.webidl',
+    'ChildNode.webidl',
+    'ClientRect.webidl',
+    'ClientRectList.webidl',
+    'ClipboardEvent.webidl',
+    'CommandEvent.webidl',
+    'Comment.webidl',
+    'CompositionEvent.webidl',
+    'ConvolverNode.webidl',
+    'Coordinates.webidl',
+    'CSS.webidl',
+    'CSSPrimitiveValue.webidl',
+    'CSSStyleDeclaration.webidl',
+    'CSSStyleSheet.webidl',
+    'CSSValue.webidl',
+    'CSSValueList.webidl',
+    'DataContainerEvent.webidl',
+    'DelayNode.webidl',
+    'DesktopNotification.webidl',
+    'DeviceMotionEvent.webidl',
+    'DeviceStorage.webidl',
+    'Document.webidl',
+    'DocumentFragment.webidl',
+    'DocumentType.webidl',
+    'DOMCursor.webidl',
+    'DOMError.webidl',
+    'DOMException.webidl',
+    'DOMImplementation.webidl',
+    'DOMMMIError.webidl',
+    'DOMParser.webidl',
+    'DOMRequest.webidl',
+    'DOMSettableTokenList.webidl',
+    'DOMStringMap.webidl',
+    'DOMTokenList.webidl',
+    'DOMTransaction.webidl',
+    'DragEvent.webidl',
+    'DummyBinding.webidl',
+    'DynamicsCompressorNode.webidl',
+    'Element.webidl',
+    'Event.webidl',
+    'EventHandler.webidl',
+    'EventListener.webidl',
+    'EventSource.webidl',
+    'EventTarget.webidl',
+    'File.webidl',
+    'FileHandle.webidl',
+    'FileList.webidl',
+    'FileMode.webidl',
+    'FileReader.webidl',
+    'FileReaderSync.webidl',
+    'FileRequest.webidl',
+    'FocusEvent.webidl',
+    'FormData.webidl',
+    'Function.webidl',
+    'GainNode.webidl',
+    'Geolocation.webidl',
+    'History.webidl',
+    'HTMLAnchorElement.webidl',
+    'HTMLAppletElement.webidl',
+    'HTMLAreaElement.webidl',
+    'HTMLAudioElement.webidl',
+    'HTMLBaseElement.webidl',
+    'HTMLBodyElement.webidl',
+    'HTMLBRElement.webidl',
+    'HTMLButtonElement.webidl',
+    'HTMLCanvasElement.webidl',
+    'HTMLCollection.webidl',
+    'HTMLDataElement.webidl',
+    'HTMLDataListElement.webidl',
+    'HTMLDirectoryElement.webidl',
+    'HTMLDivElement.webidl',
+    'HTMLDListElement.webidl',
+    'HTMLDocument.webidl',
+    'HTMLElement.webidl',
+    'HTMLEmbedElement.webidl',
+    'HTMLFieldSetElement.webidl',
+    'HTMLFontElement.webidl',
+    'HTMLFormElement.webidl',
+    'HTMLFrameElement.webidl',
+    'HTMLFrameSetElement.webidl',
+    'HTMLHeadElement.webidl',
+    'HTMLHeadingElement.webidl',
+    'HTMLHRElement.webidl',
+    'HTMLHtmlElement.webidl',
+    'HTMLIFrameElement.webidl',
+    'HTMLImageElement.webidl',
+    'HTMLInputElement.webidl',
+    'HTMLLabelElement.webidl',
+    'HTMLLegendElement.webidl',
+    'HTMLLIElement.webidl',
+    'HTMLLinkElement.webidl',
+    'HTMLMapElement.webidl',
+    'HTMLMediaElement.webidl',
+    'HTMLMenuElement.webidl',
+    'HTMLMenuItemElement.webidl',
+    'HTMLMetaElement.webidl',
+    'HTMLMeterElement.webidl',
+    'HTMLModElement.webidl',
+    'HTMLObjectElement.webidl',
+    'HTMLOListElement.webidl',
+    'HTMLOptGroupElement.webidl',
+    'HTMLOptionElement.webidl',
+    'HTMLOptionsCollection.webidl',
+    'HTMLOutputElement.webidl',
+    'HTMLParagraphElement.webidl',
+    'HTMLParamElement.webidl',
+    'HTMLPreElement.webidl',
+    'HTMLProgressElement.webidl',
+    'HTMLPropertiesCollection.webidl',
+    'HTMLQuoteElement.webidl',
+    'HTMLScriptElement.webidl',
+    'HTMLSelectElement.webidl',
+    'HTMLSourceElement.webidl',
+    'HTMLSpanElement.webidl',
+    'HTMLStyleElement.webidl',
+    'HTMLTableCaptionElement.webidl',
+    'HTMLTableCellElement.webidl',
+    'HTMLTableColElement.webidl',
+    'HTMLTableElement.webidl',
+    'HTMLTableRowElement.webidl',
+    'HTMLTableSectionElement.webidl',
+    'HTMLTemplateElement.webidl',
+    'HTMLTextAreaElement.webidl',
+    'HTMLTimeElement.webidl',
+    'HTMLTitleElement.webidl',
+    'HTMLTrackElement.webidl',
+    'HTMLUListElement.webidl',
+    'HTMLVideoElement.webidl',
+    'IDBCursor.webidl',
+    'IDBDatabase.webidl',
+    'IDBFactory.webidl',
+    'IDBFileHandle.webidl',
+    'IDBIndex.webidl',
+    'IDBObjectStore.webidl',
+    'IDBOpenDBRequest.webidl',
+    'IDBRequest.webidl',
+    'IDBTransaction.webidl',
+    'IDBVersionChangeEvent.webidl',
+    'ImageData.webidl',
+    'ImageDocument.webidl',
+    'InspectorUtils.webidl',
+    'KeyboardEvent.webidl',
+    'KeyEvent.webidl',
+    'LinkStyle.webidl',
+    'LocalMediaStream.webidl',
+    'Location.webidl',
+    'MediaElementAudioSourceNode.webidl',
+    'MediaError.webidl',
+    'MediaRecorder.webidl',
+    'MediaSource.webidl',
+    'MediaStream.webidl',
+    'MediaStreamAudioDestinationNode.webidl',
+    'MediaStreamAudioSourceNode.webidl',
+    'MediaStreamEvent.webidl',
+    'MediaStreamTrack.webidl',
+    'MessageChannel.webidl',
+    'MessageEvent.webidl',
+    'MessagePort.webidl',
+    'MimeType.webidl',
+    'MimeTypeArray.webidl',
+    'MobileMessageManager.webidl',
+    'MouseEvent.webidl',
+    'MouseScrollEvent.webidl',
+    'MozActivity.webidl',
+    'MozMmsMessage.webidl',
+    'MozNamedAttrMap.webidl',
+    'MozTimeManager.webidl',
+    'MutationEvent.webidl',
+    'MutationObserver.webidl',
+    'NetDashboard.webidl',
+    'Node.webidl',
+    'NodeFilter.webidl',
+    'NodeIterator.webidl',
+    'NodeList.webidl',
+    'Notification.webidl',
+    'NotifyAudioAvailableEvent.webidl',
+    'NotifyPaintEvent.webidl',
+    'OfflineAudioCompletionEvent.webidl',
+    'OfflineAudioContext.webidl',
+    'OfflineResourceList.webidl',
+    'OscillatorNode.webidl',
+    'PaintRequest.webidl',
+    'PaintRequestList.webidl',
+    'PannerNode.webidl',
+    'ParentNode.webidl',
+    'Performance.webidl',
+    'PerformanceNavigation.webidl',
+    'PerformanceTiming.webidl',
+    'PeriodicWave.webidl',
+    'PhoneNumberService.webidl',
+    'Plugin.webidl',
+    'PluginArray.webidl',
+    'Position.webidl',
+    'PositionError.webidl',
+    'ProcessingInstruction.webidl',
+    'Promise.webidl',
+    'PushManager.webidl',
+    'Range.webidl',
+    'Rect.webidl',
+    'RGBColor.webidl',
+    'RTCConfiguration.webidl',
+    'RTCDataChannelEvent.webidl',
+    'RTCIceCandidate.webidl',
+    'RTCPeerConnection.webidl',
+    'RTCPeerConnectionIceEvent.webidl',
+    'RTCSessionDescription.webidl',
+    'Screen.webidl',
+    'ScriptProcessorNode.webidl',
+    'ScrollAreaEvent.webidl',
+    'SettingsManager.webidl',
+    'SimpleGestureEvent.webidl',
+    'SourceBuffer.webidl',
+    'SourceBufferList.webidl',
+    'StyleSheet.webidl',
+    'SVGAElement.webidl',
+    'SVGAltGlyphElement.webidl',
+    'SVGAngle.webidl',
+    'SVGAnimatedAngle.webidl',
+    'SVGAnimatedBoolean.webidl',
+    'SVGAnimatedEnumeration.webidl',
+    'SVGAnimatedInteger.webidl',
+    'SVGAnimatedLength.webidl',
+    'SVGAnimatedLengthList.webidl',
+    'SVGAnimatedNumber.webidl',
+    'SVGAnimatedNumberList.webidl',
+    'SVGAnimatedPathData.webidl',
+    'SVGAnimatedPoints.webidl',
+    'SVGAnimatedPreserveAspectRatio.webidl',
+    'SVGAnimatedRect.webidl',
+    'SVGAnimatedString.webidl',
+    'SVGAnimatedTransformList.webidl',
+    'SVGAnimateElement.webidl',
+    'SVGAnimateMotionElement.webidl',
+    'SVGAnimateTransformElement.webidl',
+    'SVGAnimationElement.webidl',
+    'SVGCircleElement.webidl',
+    'SVGClipPathElement.webidl',
+    'SVGComponentTransferFunctionElement.webidl',
+    'SVGDefsElement.webidl',
+    'SVGDescElement.webidl',
+    'SVGDocument.webidl',
+    'SVGElement.webidl',
+    'SVGEllipseElement.webidl',
+    'SVGFEBlendElement.webidl',
+    'SVGFEColorMatrixElement.webidl',
+    'SVGFEComponentTransferElement.webidl',
+    'SVGFECompositeElement.webidl',
+    'SVGFEConvolveMatrixElement.webidl',
+    'SVGFEDiffuseLightingElement.webidl',
+    'SVGFEDisplacementMapElement.webidl',
+    'SVGFEDistantLightElement.webidl',
+    'SVGFEFloodElement.webidl',
+    'SVGFEFuncAElement.webidl',
+    'SVGFEFuncBElement.webidl',
+    'SVGFEFuncGElement.webidl',
+    'SVGFEFuncRElement.webidl',
+    'SVGFEGaussianBlurElement.webidl',
+    'SVGFEImageElement.webidl',
+    'SVGFEMergeElement.webidl',
+    'SVGFEMergeNodeElement.webidl',
+    'SVGFEMorphologyElement.webidl',
+    'SVGFEOffsetElement.webidl',
+    'SVGFEPointLightElement.webidl',
+    'SVGFESpecularLightingElement.webidl',
+    'SVGFESpotLightElement.webidl',
+    'SVGFETileElement.webidl',
+    'SVGFETurbulenceElement.webidl',
+    'SVGFilterElement.webidl',
+    'SVGFilterPrimitiveStandardAttributes.webidl',
+    'SVGFitToViewBox.webidl',
+    'SVGForeignObjectElement.webidl',
+    'SVGGElement.webidl',
+    'SVGGradientElement.webidl',
+    'SVGGraphicsElement.webidl',
+    'SVGImageElement.webidl',
+    'SVGLengthList.webidl',
+    'SVGLinearGradientElement.webidl',
+    'SVGLineElement.webidl',
+    'SVGMarkerElement.webidl',
+    'SVGMaskElement.webidl',
+    'SVGMatrix.webidl',
+    'SVGMetadataElement.webidl',
+    'SVGMPathElement.webidl',
+    'SVGNumberList.webidl',
+    'SVGPathElement.webidl',
+    'SVGPathSeg.webidl',
+    'SVGPathSegList.webidl',
+    'SVGPatternElement.webidl',
+    'SVGPoint.webidl',
+    'SVGPointList.webidl',
+    'SVGPolygonElement.webidl',
+    'SVGPolylineElement.webidl',
+    'SVGPreserveAspectRatio.webidl',
+    'SVGRadialGradientElement.webidl',
+    'SVGRect.webidl',
+    'SVGRectElement.webidl',
+    'SVGScriptElement.webidl',
+    'SVGSetElement.webidl',
+    'SVGStopElement.webidl',
+    'SVGStringList.webidl',
+    'SVGStyleElement.webidl',
+    'SVGSVGElement.webidl',
+    'SVGSwitchElement.webidl',
+    'SVGSymbolElement.webidl',
+    'SVGTests.webidl',
+    'SVGTextContentElement.webidl',
+    'SVGTextElement.webidl',
+    'SVGTextPathElement.webidl',
+    'SVGTextPositioningElement.webidl',
+    'SVGTitleElement.webidl',
+    'SVGTransform.webidl',
+    'SVGTransformList.webidl',
+    'SVGTSpanElement.webidl',
+    'SVGUnitTypes.webidl',
+    'SVGURIReference.webidl',
+    'SVGUseElement.webidl',
+    'SVGViewElement.webidl',
+    'SVGZoomAndPan.webidl',
+    'SVGZoomEvent.webidl',
+    'Telephony.webidl',
+    'TelephonyCall.webidl',
+    'TelephonyCallGroup.webidl',
+    'Text.webidl',
+    'TextDecoder.webidl',
+    'TextEncoder.webidl',
+    'TextTrack.webidl',
+    'TextTrackCueList.webidl',
+    'TextTrackList.webidl',
+    'TimeEvent.webidl',
+    'TimeRanges.webidl',
+    'Touch.webidl',
+    'TouchEvent.webidl',
+    'TouchList.webidl',
+    'TransitionEvent.webidl',
+    'TreeColumns.webidl',
+    'TreeWalker.webidl',
+    'UIEvent.webidl',
+    'UndoManager.webidl',
+    'URL.webidl',
+    'URLUtils.webidl',
+    'URLUtilsReadOnly.webidl',
+    'VTTCue.webidl',
+    'ValidityState.webidl',
+    'VideoPlaybackQuality.webidl',
+    'VideoStreamTrack.webidl',
+    'WaveShaperNode.webidl',
+    'WebComponents.webidl',
+    'WebSocket.webidl',
+    'WheelEvent.webidl',
+    'WifiOptions.webidl',
+    'Window.webidl',
+    'WorkerLocation.webidl',
+    'WorkerNavigator.webidl',
+    'XMLDocument.webidl',
+    'XMLHttpRequest.webidl',
+    'XMLHttpRequestEventTarget.webidl',
+    'XMLHttpRequestUpload.webidl',
+    'XMLSerializer.webidl',
+    'XMLStylesheetProcessingInstruction.webidl',
+    'XPathEvaluator.webidl',
+    'XULCommandEvent.webidl',
+    'XULDocument.webidl',
+    'XULElement.webidl',
+]
+
+if CONFIG['MOZ_AUDIO_CHANNEL_MANAGER']:
+    WEBIDL_FILES += [
+        'AudioChannelManager.webidl',
+    ]
+
+if CONFIG['MOZ_WEBGL']:
+    WEBIDL_FILES += [
+        'WebGLRenderingContext.webidl',
+        'WebGL2RenderingContext.webidl',
+    ]
+
+if CONFIG['MOZ_WEBRTC']:
+    WEBIDL_FILES += [
+        'DataChannel.webidl',
+        'MediaStreamList.webidl',
+    ]
+
+if CONFIG['MOZ_WEBSPEECH']:
+    WEBIDL_FILES += [
+        'SpeechGrammar.webidl',
+        'SpeechGrammarList.webidl',
+        'SpeechRecognition.webidl',
+        'SpeechRecognitionAlternative.webidl',
+        'SpeechRecognitionResult.webidl',
+        'SpeechRecognitionResultList.webidl',
+        'SpeechSynthesis.webidl',
+        'SpeechSynthesisEvent.webidl',
+        'SpeechSynthesisUtterance.webidl',
+        'SpeechSynthesisVoice.webidl',
+    ]
+
+if CONFIG['MOZ_GAMEPAD']:
+    WEBIDL_FILES += [
+        'Gamepad.webidl',
+    ]
+
+if CONFIG['MOZ_B2G_RIL']:
+    WEBIDL_FILES += [
+        'CallsList.webidl',
+        'MozStkCommandEvent.webidl',
+        'Telephony.webidl',
+        'TelephonyCall.webidl',
+        'TelephonyCallGroup.webidl',
+    ]
+
+WEBIDL_FILES += [
+    'BlobEvent.webidl',
+    'CloseEvent.webidl',
+    'CustomEvent.webidl',
+    'DeviceLightEvent.webidl',
+    'DeviceOrientationEvent.webidl',
+    'DeviceProximityEvent.webidl',
+    'DeviceStorageChangeEvent.webidl',
+    'DOMTransactionEvent.webidl',
+    'ElementReplaceEvent.webidl',
+    'HashChangeEvent.webidl',
+    'MozApplicationEvent.webidl',
+    'MozContactChangeEvent.webidl',
+    'MozMmsEvent.webidl',
+    'MozSettingsEvent.webidl',
+    'MozSmsEvent.webidl',
+    'PageTransitionEvent.webidl',
+    'PopStateEvent.webidl',
+    'PopupBlockedEvent.webidl',
+    'ProgressEvent.webidl',
+    'RecordErrorEvent.webidl',
+    'SmartCardEvent.webidl',
+    'StorageEvent.webidl',
+    'StyleRuleChangeEvent.webidl',
+    'StyleSheetApplicableStateChangeEvent.webidl',
+    'StyleSheetChangeEvent.webidl',
+    'UserProximityEvent.webidl',
+]
+
+if CONFIG['MOZ_B2G_BT']:
+    WEBIDL_FILES += [
+        'BluetoothAdapter.webidl',
+        'BluetoothDevice.webidl',
+        'BluetoothDeviceEvent.webidl',
+        'BluetoothManager.webidl',
+        'BluetoothStatusChangedEvent.webidl',
+    ]
+
+if CONFIG['MOZ_B2G_RIL']:
+    WEBIDL_FILES += [
+        'CallEvent.webidl',
+        'CFStateChangeEvent.webidl',
+        'DataErrorEvent.webidl',
+        'IccCardLockErrorEvent.webidl',
+        'MozCellBroadcast.webidl',
+        'MozCellBroadcastEvent.webidl',
+        'MozEmergencyCbModeEvent.webidl',
+        'MozOtaStatusEvent.webidl',
+        'MozVoicemailEvent.webidl',
+        'MozWifiConnectionInfoEvent.webidl',
+        'MozWifiStatusChangeEvent.webidl',
+        'USSDReceivedEvent.webidl',
+    ]
+
+if CONFIG['MOZ_GAMEPAD']:
+    WEBIDL_FILES += [
+        'GamepadAxisMoveEvent.webidl',
+        'GamepadButtonEvent.webidl',
+        'GamepadEvent.webidl',
+    ]
+
+if CONFIG['MOZ_WEBSPEECH']:
+    WEBIDL_FILES += [
+        'SpeechRecognitionError.webidl',
+        'SpeechRecognitionEvent.webidl',
+    ]
+
+if CONFIG['ENABLE_TESTS']:
+    TEST_WEBIDL_FILES += [
+        'TestCodeGen.webidl',
+        'TestDictionary.webidl',
+        'TestExampleGen.webidl',
+        'TestJSImplGen.webidl',
+        'TestJSImplInheritanceGen.webidl',
+        'TestTypedef.webidl',
+    ]
+
+if CONFIG['MOZ_B2G']:
+    WEBIDL_FILES += [
+        'InputMethod.webidl',
+    ]