Implement CSP check for manifest fetching

Source/core/frame/csp/CSPDirectiveList.cpp

Index: Source/core/frame/csp/CSPDirectiveList.cpp
diff --git a/Source/core/frame/csp/CSPDirectiveList.cpp b/Source/core/frame/csp/CSPDirectiveList.cpp
index b27df1588cfc263a34456f7421e411a42fee0637..1d33e3e7977fb64abf487378ca908c63b248d33b 100644
--- a/Source/core/frame/csp/CSPDirectiveList.cpp
+++ b/Source/core/frame/csp/CSPDirectiveList.cpp
@@ -9,6 +9,7 @@
 #include "core/frame/LocalFrame.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "platform/ParsingUtilities.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/weborigin/KURL.h"
 #include "wtf/text/WTFString.h"
 
@@ -207,6 +208,8 @@ bool CSPDirectiveList::checkSourceAndReportViolation(SourceListDirective* direct
         prefix = "Refused to load the image '";
     else if (ContentSecurityPolicy::MediaSrc == effectiveDirective)
         prefix = "Refused to load media from '";
+    else if (ContentSecurityPolicy::ManifestSrc == effectiveDirective)
+        prefix = "Refused to load manifest from '";
     else if (ContentSecurityPolicy::ObjectSrc == effectiveDirective)
         prefix = "Refused to load plugin data from '";
     else if (ContentSecurityPolicy::ScriptSrc == effectiveDirective)
@@ -345,6 +348,13 @@ bool CSPDirectiveList::allowMediaFromSource(const KURL& url, ContentSecurityPoli
         checkSource(operativeDirective(m_mediaSrc.get()), url);
 }
 
+bool CSPDirectiveList::allowManifestFromSource(const KURL& url, ContentSecurityPolicy::ReportingStatus reportingStatus) const
+{
+    return reportingStatus == ContentSecurityPolicy::SendReport ?
+        checkSourceAndReportViolation(operativeDirective(m_manifestSrc.get()), url, ContentSecurityPolicy::ManifestSrc) :
+        checkSource(operativeDirective(m_manifestSrc.get()), url);
+}
+
 bool CSPDirectiveList::allowConnectToSource(const KURL& url, ContentSecurityPolicy::ReportingStatus reportingStatus) const
 {
     return reportingStatus == ContentSecurityPolicy::SendReport ?
@@ -660,6 +670,9 @@ void CSPDirectiveList::addDirective(const String& name, const String& value)
         setCSPDirective<SourceListDirective>(name, value, m_fontSrc);
     } else if (equalIgnoringCase(name, ContentSecurityPolicy::MediaSrc)) {
         setCSPDirective<SourceListDirective>(name, value, m_mediaSrc);
+    } else if (equalIgnoringCase(name, ContentSecurityPolicy::ManifestSrc)
+        && RuntimeEnabledFeatures::manifestEnabled()) {
+        setCSPDirective<SourceListDirective>(name, value, m_manifestSrc);
     } else if (equalIgnoringCase(name, ContentSecurityPolicy::ConnectSrc)) {
         setCSPDirective<SourceListDirective>(name, value, m_connectSrc);
     } else if (equalIgnoringCase(name, ContentSecurityPolicy::Sandbox)) {