A quick fix for Issue 16597...

webkit/glue/webview_impl.cc

 /*
 * Copyright 2007 Google Inc. All Rights Reserved.
 *
 * Portions Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
 *
 * ***** BEGIN LICENSE BLOCK *****
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
@@ skipping 646 matching lines @@
     // deletion.
     autocomplete_popup_client_->RemoveItemAtIndex(selected_index);
     RefreshAutofillPopup();
     return false;
   }
 
   if (!autocomplete_popup_->isInterestedInEventForKey(event.windowsKeyCode))
     return false;
 
   if (autocomplete_popup_->handleKeyEvent(MakePlatformKeyboardEvent(event))) {
-#if defined(OS_WIN)
+#if defined(OS_WIN) || defined(OS_LINUX)
       // We need to ignore the next Char event after this otherwise pressing
       // enter when selecting an item in the menu will go to the page.
       if (WebInputEvent::RawKeyDown == event.type)
         suppress_next_keypress_event_ = true;
 #endif
       return true;
     }
 
   return false;
 }
@@ skipping 1201 matching lines @@
 
   return document->focusedNode();
 }
 
 HitTestResult WebViewImpl::HitTestResultForWindowPos(const IntPoint& pos) {
   IntPoint doc_point(
       page_->mainFrame()->view()->windowToContents(pos));
   return page_->mainFrame()->eventHandler()->
       hitTestResultAtPoint(doc_point, false);
 }