Refactor mixed content checks against the top frame into MixedContentChecker.

Source/modules/websockets/NewWebSocketChannelImpl.cpp

 /*
  * Copyright (C) 2013 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 119 matching lines @@
 
 bool NewWebSocketChannelImpl::connect(const KURL& url, const String& protocol)
 {
     WTF_LOG(Network, "NewWebSocketChannelImpl %p connect()", this);
     if (!m_handle)
         return false;
 
     if (executionContext()->isDocument() && document()->frame()) {
         if (!document()->frame()->loader().mixedContentChecker()->canConnectInsecureWebSocket(document()->securityOrigin(), url))
             return false;
-        Frame* top = document()->frame()->tree().top();
-        if (top != document()->frame() && !toLocalFrame(top)->loader().mixedContentChecker()->canConnectInsecureWebSocket(toLocalFrame(top)->document()->securityOrigin(), url))
-            return false;
     }
     if (MixedContentChecker::isMixedContent(document()->securityOrigin(), url)) {
         String message = "Connecting to a non-secure WebSocket server from a secure origin is deprecated.";
         document()->addConsoleMessage(JSMessageSource, WarningMessageLevel, message);
     }
 
     m_url = url;
     Vector<String> protocols;
     // Avoid placing an empty token in the Vector when the protocol string is
     // empty.
@@ skipping 409 matching lines @@
 }
 
 void NewWebSocketChannelImpl::trace(Visitor* visitor)
 {
     visitor->trace(m_blobLoader);
     visitor->trace(m_client);
     WebSocketChannel::trace(visitor);
 }
 
 } // namespace WebCore