Bug 1231211 P5 Add nsContentUtils::IsNonSubresourceInternalPolicyType() method. r=asuth

dom/base/nsContentUtils.cpp

@@ -8867,8 +8867,18 @@ nsContentUtils::IsNonSubresourceRequest(nsIChannel* aChannel)
     return false;
   }
   nsContentPolicyType type = loadInfo->InternalContentPolicyType();
-  return type == nsIContentPolicy::TYPE_INTERNAL_WORKER ||
-         type == nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER;
+  return IsNonSubresourceInternalPolicyType(type);
+}
+
+// static
+bool
+nsContentUtils::IsNonSubresourceInternalPolicyType(nsContentPolicyType aType)
+{
+  return aType == nsIContentPolicy::TYPE_DOCUMENT ||
+         aType == nsIContentPolicy::TYPE_INTERNAL_IFRAME ||
+         aType == nsIContentPolicy::TYPE_INTERNAL_FRAME ||
+         aType == nsIContentPolicy::TYPE_INTERNAL_WORKER ||
+         aType == nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER;
 }
 
 // static, public

dom/base/nsContentUtils.h

@@ -2907,6 +2907,8 @@ public:
 
   static bool IsNonSubresourceRequest(nsIChannel* aChannel);
 
+  static bool IsNonSubresourceInternalPolicyType(nsContentPolicyType aType);
+
   // The order of these entries matters, as we use std::min for total ordering
   // of permissions. Private Browsing is considered to be more limiting
   // then session scoping