Eradicate keyIndentifier from devtools/*

third_party/WebKit/Source/devtools/front_end/sources/JavaScriptSourceFrame.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 625 matching lines @@
     },
 
     _removeBreakpointDecoration: function(lineNumber)
     {
         this.textEditor.removeAttribute(lineNumber, "breakpoint");
         this.textEditor.removeBreakpoint(lineNumber);
     },
 
     _onKeyDown: function(event)
     {
-        if (event.keyIdentifier === "U+001B") { // Escape key
+        if (event.key === "Escape") {
             if (this._popoverHelper.isPopoverVisible()) {
                 this._popoverHelper.hidePopover();
                 event.consume();
             }
         }
     },
 
     /**
      * @param {number} lineNumber
      * @param {!WebInspector.BreakpointManager.Breakpoint=} breakpoint
@@ skipping 472 matching lines @@
         this.uiSourceCode().removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyChanged, this._workingCopyChanged, this);
         this.uiSourceCode().removeEventListener(WebInspector.UISourceCode.Events.WorkingCopyCommitted, this._workingCopyCommitted, this);
         this.uiSourceCode().removeEventListener(WebInspector.UISourceCode.Events.TitleChanged, this._showBlackboxInfobarIfNeeded, this);
         WebInspector.moduleSetting("skipStackFramesPattern").removeChangeListener(this._showBlackboxInfobarIfNeeded, this);
         WebInspector.moduleSetting("skipContentScripts").removeChangeListener(this._showBlackboxInfobarIfNeeded, this);
         WebInspector.UISourceCodeFrame.prototype.dispose.call(this);
     },
 
     __proto__: WebInspector.UISourceCodeFrame.prototype
 }