Check that ExecutionContext and LocalFrame pointers are not null before getting shouldBypassMainWor…

Source/modules/websockets/DOMWebSocket.cpp

 /*
  * Copyright (C) 2011 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 279 matching lines @@
         exceptionState.throwDOMException(SyntaxError, "The URL contains a fragment identifier ('" + m_url.fragmentIdentifier() + "'). Fragment identifiers are not allowed in WebSocket URLs.");
         return;
     }
     if (!portAllowed(m_url)) {
         m_state = CLOSED;
         exceptionState.throwSecurityError("The port " + String::number(m_url.port()) + " is not allowed.");
         return;
     }
 
     // FIXME: Convert this to check the isolated world's Content Security Policy once webkit.org/b/104520 is solved.
-    bool shouldBypassMainWorldCSP = false;
-    if (executionContext()->isDocument()) {
-        Document* document = toDocument(executionContext());
-        shouldBypassMainWorldCSP = document->frame()->script().shouldBypassMainWorldCSP();
-    }
-    if (!shouldBypassMainWorldCSP && !executionContext()->contentSecurityPolicy()->allowConnectToSource(m_url)) {
+    if (!ContentSecurityPolicy::shouldBypassMainWorld(executionContext()) && !executionContext()->contentSecurityPolicy()->allowConnectToSource(m_url)) {
         m_state = CLOSED;
         // The URL is safe to expose to JavaScript, as this check happens synchronously before redirection.
         exceptionState.throwSecurityError("Refused to connect to '" + m_url.elidedString() + "' because it violates the document's Content Security Policy.");
         return;
     }
 
     // Fail if not all elements in |protocols| are valid.
     for (size_t i = 0; i < protocols.size(); ++i) {
         if (!isValidSubprotocolString(protocols[i])) {
             m_state = CLOSED;
@@ skipping 346 matching lines @@
 
 void DOMWebSocket::trace(Visitor* visitor)
 {
     visitor->trace(m_channel);
     visitor->trace(m_eventQueue);
     WebSocketChannelClient::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace blink