[DevTools] Console view should hide the suggestion box upon console clear (Ctrl/Cmd+L).

Source/devtools/front_end/console/ConsoleView.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * 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
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 600 matching lines @@
         default:
             return new WebInspector.ConsoleViewMessage(message, this._linkifier, nestingLevel);
         }
     },
 
     _consoleCleared: function()
     {
         this._clearCurrentSearchResultHighlight();
         this._consoleMessages = [];
         this._updateMessageList();
+        this._prompt.hideSuggestBox();
+        this._prompt.clearAutoComplete(true);
 
         if (this._searchRegex)
             this._searchableView.updateSearchMatchesCount(0);
 
         this._linkifier.reset();
     },
 
     _handleContextMenuEvent: function(event)
     {
         if (event.target.enclosingNodeOrSelfWithNodeName("a"))
@@ skipping 679 matching lines @@
     /**
      * @override
      * @return {boolean}
      */
     handleAction: function()
     {
         WebInspector.console.show();
         return true;
     }
 }