DevTools: Convert TextEditor from Interface to Abstract class

third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js

Index: third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js
diff --git a/third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js b/third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js
index d5492c6ad3d960b075018923be879930be00870b..b7d7576edc8af9331bc0d67f45b121054f9c12c9 100644
--- a/third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js
+++ b/third_party/WebKit/Source/devtools/front_end/elements/ElementsTreeElement.js
@@ -777,11 +777,11 @@ Elements.ElementsTreeElement = class extends UI.TreeElement {
           {commit: commit.bind(this), cancel: dispose.bind(this), editor: editor, resize: resize.bind(this)};
       resize.call(this);
 
-      editor.widget().show(this._htmlEditElement);
+      editor.show(this._htmlEditElement);
       editor.setText(initialValue);
-      editor.widget().focus();
-      editor.widget().element.addEventListener('blur', this._editing.commit, true);
-      editor.widget().element.addEventListener('keydown', keydown.bind(this), true);
+      editor.focus();
+      editor.element.addEventListener('blur', this._editing.commit, true);
+      editor.element.addEventListener('keydown', keydown.bind(this), true);
 
       this.treeOutline.setMultilineEditing(this._editing);
     }
@@ -806,8 +806,8 @@ Elements.ElementsTreeElement = class extends UI.TreeElement {
      * @this {Elements.ElementsTreeElement}
      */
     function dispose() {
-      this._editing.editor.widget().element.removeEventListener('blur', this._editing.commit, true);
-      this._editing.editor.widget().detach();
+      this._editing.editor.element.removeEventListener('blur', this._editing.commit, true);
+      this._editing.editor.detach();
       delete this._editing;
 
       this.listItemElement.classList.remove('editing-as-html');