Bug 1968644 - Part 2: Intorduce the ClassificationFlags to nsIClassifiedChannel.idl. r=dimi,necko-reviewers,valentin

This newly introduced struct is to easily represent firstPartyClassificationFlags
and thirdPartyClassificationFlags. We will use this struct in IPC, so we
add the IPC traits implementation in this patch.

Differential Revision: https://phabricator.services.mozilla.com/D252842

Author: artines1

netwerk/base/nsIClassifiedChannel.idl

@@ -5,6 +5,17 @@
 
 #include "nsISupports.idl"
 
+%{C++
+namespace mozilla::net {
+// This struct is used to hold classification flags for both
+// firstPartyClassificationFlags and thirdPartyClassificationFlags.
+struct ClassificationFlags {
+  uint32_t firstPartyFlags;
+  uint32_t thirdPartyFlags;
+};
+}
+%}
+
 /**
  * nsIClassifiedChannel
  *

toolkit/components/url-classifier/URLClassifierIPCUtils.h

@@ -9,6 +9,7 @@
 
 #include "ipc/EnumSerializer.h"
 #include "nsIUrlClassifierFeature.h"
+#include "nsIClassifiedChannel.h"
 
 namespace IPC {
 
@@ -19,6 +20,28 @@ struct ParamTraits<nsIUrlClassifierFeature::listType>
           nsIUrlClassifierFeature::listType::blocklist,
           nsIUrlClassifierFeature::listType::entitylist> {};
 
+template <>
+struct ParamTraits<mozilla::net::ClassificationFlags> {
+  static void Write(MessageWriter* aWriter,
+                    const mozilla::net::ClassificationFlags& aParam) {
+    WriteParam(aWriter, aParam.firstPartyFlags);
+    WriteParam(aWriter, aParam.thirdPartyFlags);
+  }
+
+  static bool Read(MessageReader* aReader,
+                   mozilla::net::ClassificationFlags* aResult) {
+    uint32_t firstPartyFlags;
+    uint32_t thirdPartyFlags;
+    if (!ReadParam(aReader, &firstPartyFlags) ||
+        !ReadParam(aReader, &thirdPartyFlags)) {
+      return false;
+    }
+    aResult->firstPartyFlags = firstPartyFlags;
+    aResult->thirdPartyFlags = thirdPartyFlags;
+    return true;
+  }
+};
+
 }  // namespace IPC
 
 #endif  // mozilla_urlclassiferipcutils_h