Replicate feature policy headers to remote frames

third_party/WebKit/Source/core/dom/SecurityContext.cpp

Index: third_party/WebKit/Source/core/dom/SecurityContext.cpp
diff --git a/third_party/WebKit/Source/core/dom/SecurityContext.cpp b/third_party/WebKit/Source/core/dom/SecurityContext.cpp
index 04e8421cdbd62371c8cb27b46bf2e275b1243f16..df384837ec6da5cb3a61b514fa76ed816cec5928 100644
--- a/third_party/WebKit/Source/core/dom/SecurityContext.cpp
+++ b/third_party/WebKit/Source/core/dom/SecurityContext.cpp
@@ -99,4 +99,15 @@ void SecurityContext::enforceSuborigin(const Suborigin& suborigin) {
   didUpdateSecurityOrigin();
 }
 
+void SecurityContext::setFeaturePolicyFromHeader(
+    const String& headerValue,
+    SecurityContext* parentSecurityContext,
+    Vector<String>* messages) {

[raymes, 2016/11/21 02:17:34]

I think we should DCHECK(!m_featurePolicy) here?

[iclelland, 2016/11/21 05:05:33]

To ensure that it hasn't been set previously -- certainly can't hurt. Thanks,
done.

+  m_featurePolicy = FeaturePolicy::createFromParentPolicy(
+      (parentSecurityContext ? parentSecurityContext->getFeaturePolicy()
+                             : nullptr),
+      m_securityOrigin);
+  m_featurePolicy->setHeaderPolicy(headerValue, messages);
+}
+
 }  // namespace blink