Updating IDL files from Chrome roll.

tools/dom/dom.json

 {
   "ANGLEInstancedArrays": {
     "members": {
       "VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE": {
         "support_level": "untriaged"
       },
       "drawArraysInstancedANGLE": {
         "support_level": "untriaged"
       },
       "drawElementsInstancedANGLE": {
@@ skipping 16 matching lines @@
     "support_level": "stable"
   },
   "AesCbcParams": {
     "members": {
       "iv": {
         "support_level": "untriaged"
       }
     },
     "support_level": "untriaged"
   },
+  "AesCtrParams": {
+    "members": {
+      "counter": {
+        "support_level": "untriaged"
+      },
+      "length": {
+        "support_level": "untriaged"
+      }
+    },
+    "support_level": "untriaged"
+  },
   "AesKeyGenParams": {
     "members": {
       "length": {
         "support_level": "untriaged"
       }
     },
     "support_level": "untriaged"
   },
   "Algorithm": {
     "members": {
@@ skipping 1717 matching lines @@
       "getElementsByTagName": {},
       "getElementsByTagNameNS": {},
       "getOverrideStyle": {
         "dart_action": "suppress",
         "support_level": "nonstandard"
       },
       "getSelection": {
         "dart_action": "unstable"
       },
       "head": {},
+      "hidden": {
+        "support_level": "untriaged"
+      },
       "images": {
         "dart_action": "suppress"
       },
       "implementation": {},
       "importNode": {},
       "inputEncoding": {
         "comment": "http://www.w3.org/TR/domcore/",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
@@ skipping 181 matching lines @@
       "referrer": {},
       "securityPolicy": {
         "comment": "https://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html#idl-def-SecurityPolicy",
         "support_level": "experimental"
       },
       "selectedStylesheetSet": {
         "comment": "http://dev.w3.org/csswg/cssom/#widl-Document-selectedStyleSheetSet"
       },
       "styleSheets": {},
       "title": {},
+      "visibilityState": {
+        "support_level": "untriaged"
+      },
       "webkitCancelFullScreen": {
         "comment": "https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
       "webkitCurrentFullScreenElement": {
         "comment": "https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
@@ skipping 135 matching lines @@
     "support_level": "experimental"
   },
   "Element": {
     "comment": "http://dom.spec.whatwg.org/#interface-element",
     "members": {
       "ALLOW_KEYBOARD_INPUT": {
         "comment": "https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html#dom-element-requestfullscreen",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
+      "animate": {
+        "support_level": "untriaged"
+      },
       "attributes": {},
       "blur": {},
       "childElementCount": {},
       "children": {
         "comment": "http://www.whatwg.org/specs/web-apps/2007-10-26/multipage/section-elements.html#htmlelement",
         "dart_action": "stable",
         "support_level": "nonstandard"
       },
       "classList": {
         "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/elements.html#dom-classlist"
@@ skipping 679 matching lines @@
     "members": {
       "addEventListener": {},
       "dispatchEvent": {},
       "removeEventListener": {}
     },
     "support_level": "stable"
   },
   "File": {
     "comment": "http://www.w3.org/TR/FileAPI/#dfn-file",
     "members": {
+      "lastModified": {
+        "support_level": "untriaged"
+      },
       "lastModifiedDate": {},
       "name": {},
       "webkitRelativePath": {
         "comment": "https://plus.sandbox.google.com/+AddyOsmani/posts/Dk5UhZ6zfF3",
         "support_level": "experimental"
       }
     },
     "support_level": "stable"
   },
   "FileCallback": {
@@ skipping 189 matching lines @@
   },
   "FontFace": {
     "members": {
       "FontFace": {},
       "family": {
         "support_level": "untriaged"
       },
       "featureSettings": {
         "support_level": "untriaged"
       },
+      "load": {
+        "support_level": "untriaged"
+      },
       "status": {
         "support_level": "untriaged"
       },
       "stretch": {
         "support_level": "untriaged"
       },
       "style": {
         "support_level": "untriaged"
       },
       "unicodeRange": {
@@ skipping 1048 matching lines @@
   },
   "HTMLHRElement": {
     "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/grouping-content.html#the-hr-element",
     "members": {
       "HTMLHRElement": {},
       "align": {
         "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/obsolete.html#HTMLHRElement-partial",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
+      "color": {
+        "support_level": "untriaged"
+      },
       "noShade": {
         "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/obsolete.html#HTMLHRElement-partial",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
       "size": {
         "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/obsolete.html#HTMLHRElement-partial",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
@@ skipping 399 matching lines @@
         "support_level": "experimental"
       },
       "autoplay": {},
       "buffered": {},
       "canPlayType": {
         "comment": "https://dvcs.w3.org/hg/html-media/raw-file/tip/encrypted-media/encrypted-media.html#dom-htmlmediaelement",
         "dart_action": "unstable"
       },
       "controller": {},
       "controls": {},
+      "crossOrigin": {
+        "support_level": "untriaged"
+      },
       "currentSrc": {},
       "currentTime": {},
       "defaultMuted": {},
       "defaultPlaybackRate": {},
       "duration": {},
       "ended": {},
       "error": {},
       "initialTime": {
         "comment": "http://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-media-initialtime",
         "support_level": "experimental"
@@ skipping 959 matching lines @@
     "dart_action": "suppress",
     "members": {},
     "support_level": "nonstandard"
   },
   "IDBCursor": {
     "comment": "http://www.w3.org/TR/IndexedDB/#idl-def-IDBCursor",
     "dart_action": "unstable",
     "members": {
       "advance": {},
       "continue": {},
+      "continuePrimaryKey": {
+        "support_level": "untriaged"
+      },
       "delete": {},
       "direction": {},
       "key": {},
       "next": {
         "support_level": "nonstandard"
       },
       "primaryKey": {},
       "source": {},
       "update": {}
     },
@@ skipping 205 matching lines @@
     },
     "support_level": "stable"
   },
   "InputMethodContext": {
     "comment": "http://www.w3.org/TR/ime-api/#idl-def-InputMethodContext",
     "members": {
       "addEventListener": {
         "support_level": "untriaged"
       },
       "composition": {},
+      "compositionEndOffset": {
+        "support_level": "untriaged"
+      },
+      "compositionStartOffset": {
+        "support_level": "untriaged"
+      },
       "confirmComposition": {},
       "dispatchEvent": {
         "support_level": "untriaged"
       },
       "enabled": {},
       "locale": {},
       "open": {},
       "removeEventListener": {
         "support_level": "untriaged"
       },
@@ skipping 1012 matching lines @@
       "systemId": {}
     },
     "support_level": "deprecated"
   },
   "Notification": {
     "comment": "http://www.w3.org/TR/notifications/#notification",
     "dart_action": "experimental",
     "members": {
       "Notification": {},
       "addEventListener": {},
+      "body": {
+        "support_level": "untriaged"
+      },
       "cancel": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
       },
       "close": {},
       "dir": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
       },
       "dispatchEvent": {},
+      "icon": {
+        "support_level": "untriaged"
+      },
+      "lang": {
+        "support_level": "untriaged"
+      },
       "onclick": {},
       "onclose": {},
       "ondisplay": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
       },
       "onerror": {},
       "onshow": {},
       "permission": {},
       "removeEventListener": {},
       "replaceId": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
       },
       "requestPermission": {},
       "show": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
       },
       "tag": {
         "dart_action": "experimental",
         "support_level": "nonstandard"
+      },
+      "title": {
+        "support_level": "untriaged"
       }
     },
     "support_level": "experimental"
   },
   "NotificationCenter": {
     "comment": "http://www.w3.org/TR/notifications/#showing-a-notification",
     "dart_action": "suppress",
     "members": {
       "checkPermission": {},
       "createHTMLNotification": {},
@@ skipping 2558 matching lines @@
       },
       "xmllang": {
         "comment": "http://www.w3.org/TR/SVG/types.html#InterfaceSVGLangSpace"
       },
       "xmlspace": {
         "comment": "http://www.w3.org/TR/SVG/types.html#InterfaceSVGLangSpace"
       }
     },
     "support_level": "stable"
   },
+  "SVGGeometryElement": {
+    "members": {
+      "isPointInFill": {
+        "support_level": "untriaged"
+      },
+      "isPointInStroke": {
+        "support_level": "untriaged"
+      }
+    },
+    "support_level": "untriaged"
+  },
   "SVGGlyphElement": {
     "comment": "http://www.w3.org/TR/SVG/fonts.html#InterfaceSVGGlyphElement",
     "dart_action": "unstable",
     "members": {
       "SVGGlyphElement": {}
     },
     "support_level": "stable"
   },
   "SVGGlyphRefElement": {
     "comment": "http://www.w3.org/TR/SVG/text.html#InterfaceSVGGlyphRefElement",
@@ skipping 1752 matching lines @@
       "type": {
         "support_level": "nonstandard"
       }
     },
     "support_level": "stable"
   },
   "ServiceWorker": {
     "members": {},
     "support_level": "untriaged"
   },
+  "ServiceWorkerGlobalScope": {
+    "members": {},
+    "support_level": "untriaged"
+  },
   "ShadowRoot": {
     "comment": "https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#api-shadow-root",
     "members": {
       "activeElement": {},
       "applyAuthorStyles": {},
       "cloneNode": {},
       "elementFromPoint": {},
       "getElementById": {},
       "getElementsByClassName": {},
       "getElementsByTagName": {},
@@ skipping 488 matching lines @@
     "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#texttrack",
     "members": {
       "activeCues": {},
       "addCue": {},
       "addEventListener": {},
       "addRegion": {
         "support_level": "untriaged"
       },
       "cues": {},
       "dispatchEvent": {},
+      "id": {
+        "support_level": "untriaged"
+      },
       "kind": {},
       "label": {},
       "language": {},
       "mode": {},
       "oncuechange": {},
       "regions": {
         "support_level": "untriaged"
       },
       "removeCue": {},
       "removeEventListener": {},
@@ skipping 62 matching lines @@
       "item": {},
       "length": {}
     },
     "support_level": "experimental"
   },
   "TextTrackList": {
     "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#texttracklist",
     "members": {
       "addEventListener": {},
       "dispatchEvent": {},
+      "getTrackById": {
+        "support_level": "untriaged"
+      },
       "item": {},
       "length": {},
       "onaddtrack": {},
+      "onchange": {
+        "support_level": "untriaged"
+      },
       "removeEventListener": {}
     },
     "support_level": "experimental"
   },
   "TimeRanges": {
     "comment": "http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#timeranges",
     "dart_action": "unstable",
     "members": {
       "end": {},
       "length": {},
@@ skipping 298 matching lines @@
   },
   "Uint8ClampedArray": {
     "comment": "http://www.khronos.org/registry/typedarray/specs/latest/",
     "members": {
       "length": {},
       "setElements": {},
       "subarray": {}
     },
     "support_level": "stable"
   },
+  "VTTCue": {
+    "members": {
+      "VTTCue": {},
+      "align": {
+        "support_level": "untriaged"
+      },
+      "getCueAsHTML": {
+        "support_level": "untriaged"
+      },
+      "line": {
+        "support_level": "untriaged"
+      },
+      "position": {
+        "support_level": "untriaged"
+      },
+      "regionId": {
+        "support_level": "untriaged"
+      },
+      "size": {
+        "support_level": "untriaged"
+      },
+      "snapToLines": {
+        "support_level": "untriaged"
+      },
+      "text": {
+        "support_level": "untriaged"
+      },
+      "vertical": {
+        "support_level": "untriaged"
+      }
+    },
+    "support_level": "untriaged"
+  },
   "VTTRegion": {
     "members": {
       "VTTRegion": {},
       "height": {
         "support_level": "untriaged"
       },
       "id": {
         "support_level": "untriaged"
       },
       "regionAnchorX": {
@@ skipping 134 matching lines @@
     },
     "support_level": "experimental"
   },
   "WebGLContextAttributes": {
     "comment": "http://www.khronos.org/registry/webgl/specs/latest/#5.2",
     "dart_action": "unstable",
     "members": {
       "alpha": {},
       "antialias": {},
       "depth": {},
+      "failIfMajorPerformanceCaveat": {
+        "support_level": "untriaged"
+      },
       "premultipliedAlpha": {},
       "preserveDrawingBuffer": {},
       "stencil": {}
     },
     "support_level": "stable"
   },
   "WebGLContextEvent": {
     "comment": "http://www.khronos.org/registry/webgl/specs/latest/#WEBGLCONTEXTEVENT",
     "dart_action": "unstable",
     "members": {
@@ skipping 752 matching lines @@
   "WebKitNamedFlowCollection": {
     "comment": "http://dev.w3.org/csswg/css-regions/#dom-named-flow-collection",
     "members": {
       "__getter__": {},
       "item": {},
       "length": {},
       "namedItem": {}
     },
     "support_level": "experimental"
   },
+  "WebKitNotification": {
+    "members": {},
+    "support_level": "untriaged"
+  },
   "WebKitPoint": {
     "comment": "http://developer.apple.com/library/safari/#documentation/DataManagement/Reference/DOMWindowAdditionsReference/DOMWindowAdditions/DOMWindowAdditions.html",
     "members": {
       "WebKitPoint": {},
       "_DomPoint": {},
       "x": {},
       "y": {}
     },
     "support_level": "nonstandard"
   },
@@ skipping 974 matching lines @@
       "importStylesheet": {},
       "removeParameter": {},
       "reset": {},
       "setParameter": {},
       "transformToDocument": {},
       "transformToFragment": {}
     },
     "support_level": "nonstandard"
   }
 }