"Reverting 32641"

tools/dom/dom.json

Index: tools/dom/dom.json
diff --git a/tools/dom/dom.json b/tools/dom/dom.json
index 69e980413543525f592336af630245ab15aee572..e9576fae7ee1903b88159078957c22499c2ae3b0 100644
--- a/tools/dom/dom.json
+++ b/tools/dom/dom.json
@@ -2098,17 +2098,11 @@
         "support_level": "deprecated"
       },
       "name": {},
-      "nextElementSibling": {
-        "support_level": "untriaged"
-      },
       "notations": {
         "comment": "http://dom.spec.whatwg.org/#dom-documenttype-notations",
         "dart_action": "suppress",
         "support_level": "deprecated"
       },
-      "previousElementSibling": {
-        "support_level": "untriaged"
-      },
       "publicId": {},
       "remove": {
         "support_level": "nonstandard"
@@ -2247,8 +2241,6 @@
         "support_level": "nonstandard"
       },
       "inputMethodContext": {
-        "comment": "http://www.w3.org/TR/ime-api/#the-inputmethodcontext-property Per the spec is only on HTMLElement.",
-        "dart_action": "suppress",
         "support_level": "untriaged"
       },
       "insertAdjacentElement": {
@@ -3388,6 +3380,7 @@
       },
       "origin": {
         "comment": "WebKit only",
+        "dart_action": "suppress",
         "support_level": "nonstandard"
       },
       "password": {