DevTools: Introduce Target class which holds connection & models

Source/devtools/front_end/ResourceTreeModel.js

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /**
  * @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 = {};
 }
 
 WebInspector.ResourceTreeModel.EventTypes = {
     FrameAdded: "FrameAdded",
     FrameNavigated: "FrameNavigated",
     FrameDetached: "FrameDetached",
     FrameResized: "FrameResized",
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     screencastVisibilityChanged: function(visible)
     {
         this._resourceTreeModel.dispatchEventToListeners(WebInspector.ResourceTreeModel.EventTypes.ScreencastVisibilityChanged, {visible:visible});
     }
 }
 
 /**
  * @type {!WebInspector.ResourceTreeModel}
  */
 WebInspector.resourceTreeModel;