DevTools: Refactor linkifyRawLocation to use fallback url

Source/devtools/front_end/sdk/Target.js

Index: Source/devtools/front_end/sdk/Target.js
diff --git a/Source/devtools/front_end/sdk/Target.js b/Source/devtools/front_end/sdk/Target.js
index ddde70173843224f6b4cc389205199d0409f01d1..f56d0a522cfd946e568b67e6dc8095bcffe9c968 100644
--- a/Source/devtools/front_end/sdk/Target.js
+++ b/Source/devtools/front_end/sdk/Target.js
@@ -209,6 +209,14 @@ WebInspector.Target.prototype = {
         this.cpuProfilerModel.dispose();
     },
 
+    /**
+     * @return {boolean}
+     */
+    isDetached: function()
+    {
+        return this._connection.isClosed();
+    },
+
     __proto__: Protocol.Agents.prototype
 }