CSP: Add an experimental 'unsafe-dynamic' source expression.

third_party/WebKit/Source/core/frame/csp/SourceListDirective.h

 // 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 SourceListDirective_h
 #define SourceListDirective_h
 
 #include "core/frame/csp/CSPDirective.h"
 #include "core/frame/csp/CSPSourceList.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "platform/network/ContentSecurityPolicyParsers.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ContentSecurityPolicy;
 class KURL;
 
 class SourceListDirective final : public CSPDirective {
     WTF_MAKE_NONCOPYABLE(SourceListDirective);
 public:
     SourceListDirective(const String& name, const String& value, ContentSecurityPolicy*);
 
     bool allows(const KURL&, blink::ContentSecurityPolicy::RedirectStatus) const;
     bool allowInline() const;
     bool allowEval() const;
+    bool allowDynamic() const;
     bool allowNonce(const String& nonce) const;
     bool allowHash(const CSPHashValue&) const;
     bool isHashOrNoncePresent() const;
     uint8_t hashAlgorithmsUsed() const;
 
 private:
     CSPSourceList m_sourceList;
 };
 
 } // namespace blink
 
 #endif