[DevTools] Auto-attach to cross-process subframes under experiment.

third_party/WebKit/Source/devtools/front_end/sdk/Target.js

 /*
  * Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * @constructor
  * @extends {Protocol.Agents}
  * @param {!WebInspector.TargetManager} targetManager
@@ skipping 39 matching lines @@
     id: function()
     {
         return this._id;
     },
 
     /**
      * @return {string}
      */
     name: function()
     {
-        return this._name;
+        return this._name || this._inspectedURLName;
     },
 
     /**
      * @return {!WebInspector.TargetManager}
      */
     targetManager: function()
     {
         return this._targetManager;
     },
 
@@ skipping 135 matching lines @@
     {
         return this._inspectedURL;
     },
 
     /**
      * @param {string} inspectedURL
      */
     setInspectedURL: function(inspectedURL)
     {
         this._inspectedURL = inspectedURL;
-        InspectorFrontendHost.inspectedURLChanged(inspectedURL || "");
+        var parsedURL = inspectedURL.asParsedURL();
+        this._inspectedURLName = parsedURL ? parsedURL.lastPathComponentWithFragment() : "#" + this._id;
+        if (!this.parentTarget())
+            InspectorFrontendHost.inspectedURLChanged(inspectedURL || "");
         this._targetManager.dispatchEventToListeners(WebInspector.TargetManager.Events.InspectedURLChanged, this);
+        if (!this._name)
+            this._targetManager.dispatchEventToListeners(WebInspector.TargetManager.Events.NameChanged, this);
     },
 
     __proto__: Protocol.Agents.prototype
 }
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @param {!WebInspector.Target} target
  */
@@ skipping 54 matching lines @@
     {
         var target = /** @type {!WebInspector.Target} */ (event.data);
         if (target !== this._target)
             return;
         this.dispose();
         WebInspector.targetManager.removeEventListener(WebInspector.TargetManager.Events.TargetDisposed, this._targetDisposed, this);
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }