DevTools: Introduce Target class which holds connection & models

Source/devtools/front_end/ResourceTreeModel.js

Index: Source/devtools/front_end/ResourceTreeModel.js
diff --git a/Source/devtools/front_end/ResourceTreeModel.js b/Source/devtools/front_end/ResourceTreeModel.js
index 93bb3a821b885e199c57cdc61731e2d87b8266c9..aefe9cfc3d8386c99d8a49afbe92a781d1b7f295 100644
--- a/Source/devtools/front_end/ResourceTreeModel.js
+++ b/Source/devtools/front_end/ResourceTreeModel.js
@@ -31,24 +31,23 @@
 /**
  * @constructor
  * @extends {WebInspector.Object}
- * @param {!WebInspector.NetworkManager} networkManager
- * @param {!WebInspector.ConsoleModel} consoleModel
+ * @param {!WebInspector.Target} target
  */
-WebInspector.ResourceTreeModel = function(networkManager, consoleModel)
+WebInspector.ResourceTreeModel = function(target)
 {
-    this._agent = PageAgent;
-    networkManager.addEventListener(WebInspector.NetworkManager.EventTypes.RequestFinished, this._onRequestFinished, this);
-    networkManager.addEventListener(WebInspector.NetworkManager.EventTypes.RequestUpdateDropped, this._onRequestUpdateDropped, this);
+    this._agent = target.agent("Page");
+    target.networkManager.addEventListener(WebInspector.NetworkManager.EventTypes.RequestFinished, this._onRequestFinished, this);
+    target.networkManager.addEventListener(WebInspector.NetworkManager.EventTypes.RequestUpdateDropped, this._onRequestUpdateDropped, this);
 
-    consoleModel.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, this._consoleMessageAdded, this);
-    consoleModel.addEventListener(WebInspector.ConsoleModel.Events.RepeatCountUpdated, this._consoleMessageAdded, this);
-    consoleModel.addEventListener(WebInspector.ConsoleModel.Events.ConsoleCleared, this._consoleCleared, this);
+    target.consoleModel.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, this._consoleMessageAdded, this);
+    target.consoleModel.addEventListener(WebInspector.ConsoleModel.Events.RepeatCountUpdated, this._consoleMessageAdded, this);
+    target.consoleModel.addEventListener(WebInspector.ConsoleModel.Events.ConsoleCleared, this._consoleCleared, this);
 
     this._agent.enable();
 
     this._fetchResourceTree();
 
-    InspectorBackend.registerPageDispatcher(new WebInspector.PageDispatcher(this));
+    target.registerDispatcher("Page", new WebInspector.PageDispatcher(this));
 
     this._pendingConsoleMessages = {};
     this._securityOriginFrameCount = {};