Implement CSP check for manifest fetching

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 37d8fce3b1dc52f8a1c9afe2be6559bece56bf10..1256744f378773b64390f01c1c052de1a78bb41e 100644
--- a/Source/core/frame/csp/CSPDirectiveList.h
+++ b/Source/core/frame/csp/CSPDirectiveList.h
@@ -46,6 +46,7 @@ public:
     bool allowStyleFromSource(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
     bool allowFontFromSource(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
     bool allowMediaFromSource(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
+    bool allowManifestFromSource(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
     bool allowConnectToSource(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
     bool allowFormAction(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
     bool allowBaseURI(const KURL&, ContentSecurityPolicy::ReportingStatus) const;
@@ -126,6 +127,7 @@ private:
     OwnPtr<SourceListDirective> m_frameSrc;
     OwnPtr<SourceListDirective> m_imgSrc;
     OwnPtr<SourceListDirective> m_mediaSrc;
+    OwnPtr<SourceListDirective> m_manifestSrc;
     OwnPtr<SourceListDirective> m_objectSrc;
     OwnPtr<SourceListDirective> m_scriptSrc;
     OwnPtr<SourceListDirective> m_styleSrc;