[DevTools] Do not expose agents on Target

third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js

Index: third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js b/third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js
index bf735c6a5ec3ae345d1245a22fc4338d3d3be13d..9be5ee103bf022789c26d1393760627a569dfe40 100644
--- a/third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/resources/DatabaseModel.js
@@ -131,13 +131,14 @@ Resources.Database = class {
 Resources.DatabaseModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
+   * @param {!Protocol.Dispatcher} dispatcher
    */
-  constructor(target) {
-    super(target);
+  constructor(target, dispatcher) {
+    super(target, dispatcher);
 
     this._databases = [];
-    this._agent = target.databaseAgent();
-    this.target().registerDatabaseDispatcher(new Resources.DatabaseDispatcher(this));
+    this._agent = dispatcher.databaseAgent();
+    dispatcher.registerDatabaseDispatcher(new Resources.DatabaseDispatcher(this));
   }
 
   enable() {