[DevTools] Remove Common.Event.target field.

third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
index b4a07c0bfd87bd2deb885acd9ecee77c5252f336..c4112510ee1413cd5a081d00e38418db4dd9d1e5 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
@@ -1370,7 +1370,7 @@ SDK.DOMModel = class extends SDK.SDKModel {
       this._document = new SDK.DOMDocument(this, payload);
     else
       this._document = null;
-    this.dispatchEventToListeners(SDK.DOMModel.Events.DocumentUpdated, this._document);
+    this.dispatchEventToListeners(SDK.DOMModel.Events.DocumentUpdated, this);
   }
 
   /**
@@ -1728,7 +1728,7 @@ SDK.DOMModel = class extends SDK.SDKModel {
      */
     function onDocumentAvailable() {
       this._inspectModeEnabled = mode !== Protocol.DOM.InspectMode.None;
-      this.dispatchEventToListeners(SDK.DOMModel.Events.InspectModeWillBeToggled, this._inspectModeEnabled);
+      this.dispatchEventToListeners(SDK.DOMModel.Events.InspectModeWillBeToggled, this);
       this._highlighter.setInspectMode(mode, this._buildHighlightConfig(), callback);
     }
     this.requestDocument(onDocumentAvailable.bind(this));