Consider bundle_data as public_deps of create_bundle targets.

tools/gn/target.cc

Index: tools/gn/target.cc
diff --git a/tools/gn/target.cc b/tools/gn/target.cc
index 714fd911f9657c038dda56c1b096ded0365d759c..d0bbb9abd82408f6f0e93e55021ece77f1efd046 100644
--- a/tools/gn/target.cc
+++ b/tools/gn/target.cc
@@ -125,6 +125,12 @@ bool EnsureFileIsGeneratedByDependency(const Target* target,
                                             seen_targets))
         return true;  // Found a path.
     }
+    for (const auto& pair : target->bundle_data().deps()) {
+      if (EnsureFileIsGeneratedByDependency(pair.ptr, file, false,
+                                            consider_object_files,
+                                            seen_targets))
+        return true;  // Found a path.
+    }
   }
   return false;
 }