Let ContentSecurityPolicy shared between imports and the master.

Source/core/frame/ContentSecurityPolicy.h

 /*
  * 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef ContentSecurityPolicy_h
 #define ContentSecurityPolicy_h
 
 #include "bindings/v8/ScriptState.h"
 #include "core/dom/Document.h"
 #include "platform/network/HTTPParsers.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "wtf/HashSet.h"
 #include "wtf/PassOwnPtr.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
 #include "wtf/text/StringHash.h"
 #include "wtf/text/TextPosition.h"
 #include "wtf/text/WTFString.h"
 
 namespace WTF {
 class OrdinalNumber;
 }
 
 namespace WebCore {
 
 class ContentSecurityPolicyResponseHeaders;
 class CSPDirectiveList;
 class DOMStringList;
 class JSONObject;
 class KURL;
 class ExecutionContextClient;
 class SecurityOrigin;
 
 typedef int SandboxFlags;
 typedef Vector<OwnPtr<CSPDirectiveList> > CSPDirectiveListVector;
 
-class ContentSecurityPolicy {
+class ContentSecurityPolicy : public RefCounted<ContentSecurityPolicy> {
     WTF_MAKE_FAST_ALLOCATED;
 public:
-    static PassOwnPtr<ContentSecurityPolicy> create(ExecutionContextClient* client)
+    static PassRefPtr<ContentSecurityPolicy> create(ExecutionContextClient* client)
     {
-        return adoptPtr(new ContentSecurityPolicy(client));
+        return adoptRef(new ContentSecurityPolicy(client));
     }
     ~ContentSecurityPolicy();
 
     void copyStateFrom(const ContentSecurityPolicy*);
 
     enum HeaderType {
         Report,
         Enforce,
     };
 
@@ skipping 110 matching lines @@
     // We put the hash functions used on the policy object so that we only need
     // to calculate a hash once and then distribute it to all of the directives
     // for validation.
     uint8_t m_scriptHashAlgorithmsUsed;
     uint8_t m_styleHashAlgorithmsUsed;
 };
 
 }
 
 #endif