DevTools: get rid of WebInspector.cssModel, use target models instead

Source/devtools/front_end/profiler/CanvasProfileView.js

 /*
  * Copyright (C) 2013 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 621 matching lines @@
     /** @type {!Object.<string, !Element>} */
     this._frameOptions = {};
 
     /** @type {!Object.<string, boolean>} */
     this._framesWithCanvases = {};
 
     this._frameSelector = new WebInspector.StatusBarComboBox(this._dispatchViewUpdatedEvent.bind(this));
     this._frameSelector.element.title = WebInspector.UIString("Frame containing the canvases to capture.");
     this._frameSelector.element.classList.add("hidden");
 
-    this._target = /** @type {!WebInspector.Target} */ (WebInspector.targetManager.activeTarget());
+    this._target = /** @type {!WebInspector.Target} */ (WebInspector.targetManager.mainTarget());
     this._target.resourceTreeModel.frames().forEach(this._addFrame, this);
     this._target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.FrameAdded, this._frameAdded, this);
     this._target.resourceTreeModel.addEventListener(WebInspector.ResourceTreeModel.EventTypes.FrameDetached, this._frameRemoved, this);
 
     this._dispatcher = new WebInspector.CanvasDispatcher(this);
     this._canvasAgentEnabled = false;
 
     this._decorationElement = document.createElement("div");
     this._decorationElement.className = "profile-canvas-decoration";
     this._updateDecorationElement();
@@ skipping 619 matching lines @@
     },
 
     clearResourceStates: function()
     {
         this._currentResourceStates = {};
         this.dispatchEventToListeners(WebInspector.CanvasTraceLogPlayerProxy.Events.CanvasReplayStateChanged);
     },
 
     __proto__: WebInspector.Object.prototype
 }