Make SecurityContext available in RemoteFrames.

Source/core/dom/RemoteSecurityContext.h

Index: Source/core/dom/RemoteSecurityContext.h
diff --git a/Source/core/dom/RemoteSecurityContext.h b/Source/core/dom/RemoteSecurityContext.h
new file mode 100644
index 0000000000000000000000000000000000000000..b631750b570168a95f24c93f7a2cf0254988dec1
--- /dev/null
+++ b/Source/core/dom/RemoteSecurityContext.h
@@ -0,0 +1,23 @@
+// 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.
+
+#ifndef RemoteSecurityContext_h
+#define RemoteSecurityContext_h
+
+#include "core/dom/SecurityContext.h"
+
+namespace blink {
+
+class RemoteSecurityContext : public SecurityContext, public RefCounted<RemoteSecurityContext> {
+public:
+    static PassRefPtr<RemoteSecurityContext> create();
+    void setReplicatedOrigin(PassRefPtr<SecurityOrigin>);
+
+private:
+    RemoteSecurityContext();
+};
+
+} // namespace blink
+
+#endif // RemoteSecurityContext_h