[DevTools] Refactor connection-related classes.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 480 matching lines @@
 
     /**
      * @param {string} scriptId
      * @param {number} lineNumber
      * @param {number} columnNumber
      * @return {?string}
      */
     function linkifyLocationAsText(scriptId, lineNumber, columnNumber)
     {
         var debuggerModel = WebInspector.DebuggerModel.fromTarget(target);
-        if (!target || target.isDetached() || !scriptId || !debuggerModel)
+        if (!target || target.isDisposed() || !scriptId || !debuggerModel)
             return null;
         var rawLocation = debuggerModel.createRawLocationByScriptId(scriptId, lineNumber, columnNumber);
         if (!rawLocation)
             return null;
         var uiLocation = WebInspector.debuggerWorkspaceBinding.rawLocationToUILocation(rawLocation);
         return uiLocation.linkText();
     }
 
     /**
      * @return {?string}
@@ skipping 1632 matching lines @@
     case warnings.V8Deopt:
         span.appendChild(WebInspector.linkifyURLAsNode("https://github.com/GoogleChrome/devtools-docs/issues/53",
             WebInspector.UIString("Not optimized"), undefined, true));
         span.createTextChild(WebInspector.UIString(": %s", eventData["deoptReason"]));
         break;
     default:
         console.assert(false, "Unhandled TimelineModel.WarningType");
     }
     return span;
 };