[WIP NOT FOR COMMIT] Feature policy: Add basic algorithm for supporting frame policies, start plumb…

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index ef1703731c00c409395fa99bc1102a33da21c364..c518e4e5b088433e2e7b254b830805cd9b9ba8e0 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -862,7 +862,8 @@ blink::WebFeaturePolicy* BlinkPlatformImpl::createFeaturePolicy(
     const blink::WebParsedFeaturePolicyHeader& policyHeader,
     const blink::WebSecurityOrigin& origin) {
   std::unique_ptr<FeaturePolicy> policy = FeaturePolicy::CreateFromParentPolicy(
-      static_cast<const FeaturePolicy*>(parentPolicy), url::Origin(origin));
+      static_cast<const FeaturePolicy*>(parentPolicy), nullptr,
+      url::Origin(origin));
   policy->SetHeaderPolicy(FeaturePolicyHeaderFromWeb(policyHeader));
   return policy.release();
 }