DevTools: carefully cleanup script UISourceCodes

third_party/WebKit/Source/devtools/front_end/bindings/BlackboxManager.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.
 /**
  * @unrestricted
  * @implements {SDK.SDKModelObserver<!SDK.DebuggerModel>}
  */
 Bindings.BlackboxManager = class {
   /**
    * @param {!Bindings.DebuggerWorkspaceBinding} debuggerWorkspaceBinding
@@ skipping 258 matching lines @@
     Common.moduleSetting('skipStackFramesPattern').setAsArray(regexPatterns);
   }
 
   _patternChanged() {
     this._isBlackboxedURLCache.clear();
 
     /** @type {!Array<!Promise>} */
     var promises = [];
     for (var debuggerModel of SDK.targetManager.models(SDK.DebuggerModel)) {
       promises.push(this._setBlackboxPatterns(debuggerModel));
-      for (var scriptId in debuggerModel.scripts) {
-        var script = debuggerModel.scripts[scriptId];
+      for (var script of debuggerModel.scripts())
         promises.push(this._addScript(script).then(loadSourceMap.bind(this, script)));
-      }
     }
     Promise.all(promises).then(() => {
       var listeners = Array.from(this._listeners);
       for (var listener of listeners)
         listener();
       this._patternChangeFinishedForTests();
     });
 
     /**
      * @param {!SDK.Script} script
@@ skipping 134 matching lines @@
       if (scheme === 'chrome-extension')
         prefix += parsedURL.host + '\\b';
       prefix += '.*';
     }
     return prefix + name.escapeForRegExp() + (url.endsWith(name) ? '$' : '\\b');
   }
 };
 
 /** @type {!Bindings.BlackboxManager} */
 Bindings.blackboxManager;