innerText, outerText should dispatch custom element reactions.

third_party/WebKit/Source/core/html/HTMLElement.idl

Index: third_party/WebKit/Source/core/html/HTMLElement.idl
diff --git a/third_party/WebKit/Source/core/html/HTMLElement.idl b/third_party/WebKit/Source/core/html/HTMLElement.idl
index cbf6d8716936a7148fbe4ed472b4311cb9720a49..37a0f7f7defeeb9a0f3b7fae074a2861281bbb1c 100644
--- a/third_party/WebKit/Source/core/html/HTMLElement.idl
+++ b/third_party/WebKit/Source/core/html/HTMLElement.idl
@@ -61,8 +61,8 @@ interface HTMLElement : Element {
     [RuntimeEnabled=CSSTypedOM] readonly attribute StylePropertyMap styleMap;
 
     // Non-standard APIs
-    [TreatNullAs=NullString, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementInnerText] attribute DOMString innerText;
-    [TreatNullAs=NullString, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementOuterText] attribute DOMString outerText;
+    [TreatNullAs=NullString, CEReactions, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementInnerText] attribute DOMString innerText;
+    [TreatNullAs=NullString, CEReactions, CustomElementCallbacks, RaisesException=Setter, MeasureAs=HTMLElementOuterText] attribute DOMString outerText;
     [CEReactions, Reflect, TreatNullAs=NullString, MeasureAs=PrefixedHTMLElementDropzone] attribute DOMString webkitdropzone;
 };