Sandbox should prevent 'execCommand("print", ...)'.

third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 683 matching lines @@
 void LocalDOMWindow::blur() {}
 
 void LocalDOMWindow::print(ScriptState* scriptState) {
   if (!frame())
     return;
 
   FrameHost* host = frame()->host();
   if (!host)
     return;
 
-  if (document()->isSandboxed(SandboxModals)) {
-    UseCounter::count(document(), UseCounter::DialogInSandboxedContext);
-    frameConsole()->addMessage(ConsoleMessage::create(
-        SecurityMessageSource, ErrorMessageLevel,
-        "Ignored call to 'print()'. The document is sandboxed, and the "
-        "'allow-modals' keyword is not set."));
-    return;
-  }
-
   if (scriptState &&
       v8::MicrotasksScope::IsRunningMicrotasks(scriptState->isolate())) {
     UseCounter::count(document(), UseCounter::During_Microtask_Print);
   }
 
   if (frame()->isLoading()) {
     m_shouldPrintWhenFinishedLoading = true;
     return;
   }
 
@@ skipping 835 matching lines @@
 
 LocalFrame* LocalDOMWindow::frame() const {
   // If the LocalDOMWindow still has a frame reference, that frame must point
   // back to this LocalDOMWindow: otherwise, it's easy to get into a situation
   // where script execution leaks between different LocalDOMWindows.
   SECURITY_DCHECK(!m_frame || m_frame->domWindow() == this);
   return m_frame;
 }
 
 }  // namespace blink