[DevTools] Do not expose agents on Target

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/HeapProfilerModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/HeapProfilerModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/HeapProfilerModel.js
index 99849477b28d17a5efb0a40473b882d00a39873c..0eb6106836bda5eef3b032bf20f0f6099dafc1df 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/HeapProfilerModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/HeapProfilerModel.js
@@ -4,12 +4,13 @@
 SDK.HeapProfilerModel = class extends SDK.SDKModel {
   /**
    * @param {!SDK.Target} target
+   * @param {!Protocol.Dispatcher} dispatcher
    */
-  constructor(target) {
-    super(target);
-    target.registerHeapProfilerDispatcher(new SDK.HeapProfilerDispatcher(this));
+  constructor(target, dispatcher) {
+    super(target, dispatcher);
+    dispatcher.registerHeapProfilerDispatcher(new SDK.HeapProfilerDispatcher(this));
     this._enabled = false;
-    this._heapProfilerAgent = target.heapProfilerAgent();
+    this._heapProfilerAgent = dispatcher.heapProfilerAgent();
     this._runtimeModel = /** @type {!SDK.RuntimeModel} */ (target.model(SDK.RuntimeModel));
   }