DevTools: introduce multitarget model listeners

Source/devtools/front_end/sdk/HeapProfilerModel.js

 /**
  * @constructor
- * @extends {WebInspector.SDKObject}
+ * @extends {WebInspector.SDKModel}
  * @param {!WebInspector.Target} target
  */
 WebInspector.HeapProfilerModel = function(target)
 {
-    WebInspector.SDKObject.call(this, target);
+    WebInspector.SDKModel.call(this, WebInspector.HeapProfilerModel, target);
     target.registerHeapProfilerDispatcher(new WebInspector.HeapProfilerDispatcher(this));
     this._enabled = false;
     this._heapProfilerAgent = target.heapProfilerAgent();
 }
 
 WebInspector.HeapProfilerModel.Events = {
     HeapStatsUpdate: "HeapStatsUpdate",
     LastSeenObjectId: "LastSeenObjectId",
     AddHeapSnapshotChunk: "AddHeapSnapshotChunk",
     ReportHeapSnapshotProgress: "ReportHeapSnapshotProgress",
@@ skipping 44 matching lines @@
     reportHeapSnapshotProgress: function(done, total, finished)
     {
         this.dispatchEventToListeners(WebInspector.HeapProfilerModel.Events.ReportHeapSnapshotProgress, {done: done, total: total, finished: finished});
     },
 
     resetProfiles: function()
     {
         this.dispatchEventToListeners(WebInspector.HeapProfilerModel.Events.ResetProfiles);
     },
 
-    __proto__: WebInspector.SDKObject.prototype
+    __proto__: WebInspector.SDKModel.prototype
 }
 
 
 /**
  * @constructor
  * @implements {HeapProfilerAgent.Dispatcher}
  */
 WebInspector.HeapProfilerDispatcher = function(model)
 {
     this._heapProfilerModel = model;
@@ skipping 34 matching lines @@
     reportHeapSnapshotProgress: function(done, total, finished)
     {
         this._heapProfilerModel.reportHeapSnapshotProgress(done, total, finished);
     },
 
     resetProfiles: function()
     {
         this._heapProfilerModel.resetProfiles();
     }
 }