DevTools: introduce multitarget model listeners

Source/devtools/front_end/sdk/NetworkManager.js

Index: Source/devtools/front_end/sdk/NetworkManager.js
diff --git a/Source/devtools/front_end/sdk/NetworkManager.js b/Source/devtools/front_end/sdk/NetworkManager.js
index 96463686dc44b54765f0da0e5f0061e05e11db1d..d31932d9c8e887e1cee2078abd25407620a504f2 100644
--- a/Source/devtools/front_end/sdk/NetworkManager.js
+++ b/Source/devtools/front_end/sdk/NetworkManager.js
@@ -30,12 +30,12 @@
 
 /**
  * @constructor
- * @extends {WebInspector.SDKObject}
+ * @extends {WebInspector.SDKModel}
  * @param {!WebInspector.Target} target
  */
 WebInspector.NetworkManager = function(target)
 {
-    WebInspector.SDKObject.call(this, target);
+    WebInspector.SDKModel.call(this, WebInspector.NetworkManager, target);
     this._dispatcher = new WebInspector.NetworkDispatcher(this);
     this._target = target;
     this._networkAgent = target.networkAgent();
@@ -135,7 +135,7 @@ WebInspector.NetworkManager.prototype = {
         WebInspector.settings.cacheDisabled.removeChangeListener(this._cacheDisabledSettingChanged, this)
     },
 
-    __proto__: WebInspector.SDKObject.prototype
+    __proto__: WebInspector.SDKModel.prototype
 }
 
 /**
@@ -570,8 +570,3 @@ WebInspector.NetworkDispatcher.prototype = {
         return networkRequest;
     }
 }
-
-/**
- * @type {!WebInspector.NetworkManager}
- */
-WebInspector.networkManager;