Revert of [DevTools] Don't handle shortcuts while dialog is open.

Source/devtools/front_end/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 502 matching lines @@
             }
             break;
         }
         return false;
     },
 
     _postDocumentKeyDown: function(event)
     {
         if (event.handled)
             return;
-        if (WebInspector.Dialog.currentInstance())
-            return;
 
         if (WebInspector.inspectorView.currentPanel()) {
             WebInspector.inspectorView.currentPanel().handleShortcut(event);
             if (event.handled) {
                 event.consume(true);
                 return;
             }
         }
 
         if (WebInspector.advancedSearchController.handleShortcut(event))
@@ skipping 212 matching lines @@
 
 WebInspector.__defineGetter__("inspectedPageURL", function()
 {
     return WebInspector.resourceTreeModel.inspectedPageURL();
 });
 
 WebInspector.panel = function(name)
 {
     return WebInspector.inspectorView.panel(name);
 }