Auto merge of #24123 - gterzian:redo_blob, r=jdm

Restructure Blob, structured serialization

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FIX #24052 and also address the "cloning" half of FIX #23917

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1 files changed, 1 insertions, 1 deletions

diff --git a/components/net_traits/filemanager_thread.rs b/components/net_traits/filemanager_thread.rs
index 25a651eea29..4da1da66bd6 100644
--- a/components/net_traits/filemanager_thread.rs
+++ b/components/net_traits/filemanager_thread.rs
@@ -19,7 +19,7 @@ pub type FileOrigin = String;
 /// Relative slice positions of a sequence,
 /// whose semantic should be consistent with (start, end) parameters in
 /// <https://w3c.github.io/FileAPI/#dfn-slice>
-#[derive(Clone, Debug, Deserialize, Serialize)]
+#[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
 pub struct RelativePos {
     /// Relative to first byte if non-negative,
     /// relative to one past last byte if negative,