Back-patch r40729 to dartium 37 / trunk

tools/dom/dom.json

 {
   "ANGLEInstancedArrays": {
     "members": {
       "VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE": {
         "support_level": "untriaged"
       },
       "drawArraysInstancedANGLE": {
         "support_level": "untriaged"
       },
       "drawElementsInstancedANGLE": {
@@ skipping 1238 matching lines @@
   "CompositionEvent": {
     "comment": "http://dev.w3.org/2006/webapi/DOM-Level-3-Events/html/DOM3-Events.html#events-CompositionEvent",
     "members": {
       "activeSegmentEnd": {
         "support_level": "untriaged"
       },
       "activeSegmentStart": {
         "support_level": "untriaged"
       },
       "data": {},
+      "getSegments": {
+        "support_level": "untriaged"
+      },
       "initCompositionEvent": {}
     },
     "support_level": "stable"
   },
   "Console": {
     "members": {
       "assert": {
         "support_level": "untriaged"
       },
       "assertCondition": {
@@ skipping 15354 matching lines @@
       "importStylesheet": {},
       "removeParameter": {},
       "reset": {},
       "setParameter": {},
       "transformToDocument": {},
       "transformToFragment": {}
     },
     "support_level": "nonstandard"
   }
 }