DevTools: allow reattaching main target live.

third_party/WebKit/Source/devtools/front_end/sdk/InspectorBackend.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 402 matching lines @@
             for (var id = 0; id < scripts.length; ++id)
                 scripts[id].call(this);
         }
     },
 
     _dumpProtocolMessage: function(message)
     {
         console.log(message);
     },
 
+    close: function()
+    {
+        this.forceClose();
+        this.connectionClosed("force close");
+    },
+
+    /**
+     * @protected
+     */
+    forceClose: function()
+    {
+    },
+
     /**
      * @protected
      * @param {string} reason
      */
     connectionClosed: function(reason)
     {
         this._isConnected = false;
         this._runPendingCallbacks();
         this.dispatchEventToListeners(InspectorBackendClass.Connection.Events.Disconnected, {reason: reason});
     },
@@ skipping 301 matching lines @@
     }
 }
 
 InspectorBackendClass.Options = {
     dumpInspectorTimeStats: false,
     dumpInspectorProtocolMessages: false,
     suppressRequestErrors: false
 }
 
 InspectorBackend = new InspectorBackendClass();