Make SecurityContext available in RemoteFrames.

Source/web/WebFrame.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "public/web/WebFrame.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/RemoteFrame.h"
@@ skipping 80 matching lines @@
     }
 
     return true;
 }
 
 void WebFrame::detach()
 {
     toCoreFrame(this)->detach();
 }
 
+WebSecurityOrigin WebFrame::securityOrigin() const
+{
+    return WebSecurityOrigin(toCoreFrame(this)->securityContext()->securityOrigin());
+}
+
 WebFrame* WebFrame::opener() const
 {
     return m_opener;
 }
 
 void WebFrame::setOpener(WebFrame* opener)
 {
     if (m_opener)
         m_opener->m_openedFrameTracker->remove(this);
     if (opener)
@@ skipping 162 matching lines @@
 }
 
 void WebFrame::clearWeakFrames(Visitor* visitor)
 {
     if (!isFrameAlive(visitor, m_opener))
         m_opener = nullptr;
 }
 #endif
 
 } // namespace blink