[DevTools] Fix compiler errors in bindings module

third_party/WebKit/Source/devtools/front_end/bindings/StylesSourceMapping.js

 /*
  * Copyright (C) 2012 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 164 matching lines @@
     {
         var styleFile = this._styleFiles.get(uiSourceCode);
         if (!styleFile)
             return;
         styleFile.dispose();
         this._styleFiles.delete(uiSourceCode);
     },
 
     _unbindAllUISourceCodes: function()
     {
-        for (var styleFile of this._styleFiles.keys())
+        for (var styleFile of this._styleFiles.values())
             styleFile.dispose();
         this._styleFiles.clear();
         this._urlToHeadersByFrameId = new Map();
     },
 
     /**
      * @param {!WebInspector.Event} event
      */
     _uiSourceCodeAddedToWorkspace: function(event)
     {
@@ skipping 197 matching lines @@
         this._uiSourceCode.addRevision(content);
         delete this._isAddingRevision;
     },
 
     dispose: function()
     {
         this._uiSourceCode.removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyCommitted, this._workingCopyCommitted, this);
         this._uiSourceCode.removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyChanged, this._workingCopyChanged, this);
     }
 }