[DevTools] Do not expose agents on Target

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/PaintProfiler.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/PaintProfiler.js b/third_party/WebKit/Source/devtools/front_end/sdk/PaintProfiler.js
index 058e3e1811415a62fbf48f1731d4202db85f03d1..976a4bc35137c39ac61e5e31f9b9d7bf5ce36bcc 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/PaintProfiler.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/PaintProfiler.js
@@ -31,10 +31,11 @@
 SDK.PaintProfilerModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
+   * @param {!Protocol.Dispatcher} dispatcher
    */
-  constructor(target) {
-    super(target);
-    this._layerTreeAgent = target.layerTreeAgent();
+  constructor(target, dispatcher) {
+    super(target, dispatcher);
+    this._layerTreeAgent = dispatcher.layerTreeAgent();
   }
 
   /**