[DevTools] Refactor connection-related classes.

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

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
index 8043805990e102c3c5bb16cff7684376d1c72c34..3bd9ca1ed30c6d9acecd4ec9087e7a0131719a48 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
@@ -498,7 +498,7 @@ WebInspector.TimelineUIUtils.buildDetailsTextForTraceEvent = function(event, tar
     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)