Omit zero-size search results in heap snapshot

The Summary pane in the heap snapshot viewer doesn't list any objects
with zero self size. This change updates the ctrl-F search functionality
to match.

Bug: 392591004
Change-Id: I34e6ea9084ae3cbb860de6e702b771597d6434e7
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6200405
Commit-Queue: Ergün Erdoğmuş <[email protected]>
Reviewed-by: Ergün Erdoğmuş <[email protected]>
Reviewed-by: Simon Zünd <[email protected]>

Author: sethbrenith

front_end/entrypoints/heap_snapshot_worker/HeapSnapshot.ts

@@ -1118,6 +1118,11 @@ export abstract class HeapSnapshot {
       if (filter && !filter(node)) {
         continue;
       }
+      if (node.selfSize() === 0) {
+        // Nodes with size zero are omitted in the data grid, so avoid returning
+        // search results that can't be navigated to.
+        continue;
+      }
       const name = node.name();
       if (name === node.rawName()) {
         // If the string displayed to the user matches the raw name from the