Basic experimental suborigin CSP directive and SecurityOrigin mods

Source/core/frame/csp/CSPDirectiveList.h

Index: Source/core/frame/csp/CSPDirectiveList.h
diff --git a/Source/core/frame/csp/CSPDirectiveList.h b/Source/core/frame/csp/CSPDirectiveList.h
index 716b904e3c6087a1fec145251cf2991051fc69c9..8a88f748750ea5d8e54f4852e2ee0372c3ec80ad 100644
--- a/Source/core/frame/csp/CSPDirectiveList.h
+++ b/Source/core/frame/csp/CSPDirectiveList.h
@@ -86,8 +86,10 @@ private:
     void parsePluginTypes(const String& name, const String& value);
     void parseReflectedXSS(const String& name, const String& value);
     void parseReferrer(const String& name, const String& value);
+    String parseSuboriginName(const String& policy);
     void addDirective(const String& name, const String& value);
     void applySandboxPolicy(const String& name, const String& sandboxPolicy);
+    void applySuboriginPolicy(const String& name, const String& suboriginPolicy);
     void enforceStrictMixedContentChecking(const String& name, const String& value);
     void enableInsecureRequestsUpgrade(const String& name, const String& value);
 
@@ -127,7 +129,8 @@ private:
     ContentSecurityPolicyHeaderSource m_headerSource;
 
     bool m_reportOnly;
-    bool m_haveSandboxPolicy;
+    bool m_hasSandboxPolicy;
+    bool m_hasSuboriginPolicy;
     ReflectedXSSDisposition m_reflectedXSSDisposition;
 
     bool m_didSetReferrerPolicy;