servo: Merge #17248 - Fix parent climb hierarchy in send_frame_tree (from cbrewster:fix_the_chrome); r=asajeffrey

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #17246 (github issue number if applicable).

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- [ ] These changes do not require tests because _____

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Source-Repo: https://github.com/servo/servo
Source-Revision: 1fe70437cb182cb734b4bbd1e7c86b38a4557a17

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : c87ff72b7071abd19bd3d70f65346221b6b2ccfe

servo/components/constellation/constellation.rs

@@ -786,6 +786,7 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
                  top_level_id: TopLevelBrowsingContextId,
                  pipeline_id: PipelineId,
                  load_data: LoadData) {
+        debug!("Creating new browsing context {}", browsing_context_id);
         let browsing_context = BrowsingContext::new(browsing_context_id, top_level_id, pipeline_id, load_data);
         self.browsing_contexts.insert(browsing_context_id, browsing_context);
 
@@ -2857,11 +2858,11 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
 
         while let Some(pipeline) = self.pipelines.get(&pipeline_id) {
             match pipeline.parent_info {
-                Some((parent_id, _)) => {
+                Some((parent_id, _)) => pipeline_id = parent_id,
+                None => {
                     browsing_context_id = pipeline.browsing_context_id;
-                    pipeline_id = parent_id;
+                    break;
                 },
-                None => break,
             }
         }