diff -up chromium-98.0.4758.80/base/allocator/partition_allocator/starscan/metadata_allocator.h.wtf chromium-98.0.4758.80/base/allocator/partition_allocator/starscan/metadata_allocator.h
--- chromium-98.0.4758.80/base/allocator/partition_allocator/starscan/metadata_allocator.h.wtf	2022-02-05 16:05:15.125570250 +0000
+++ chromium-98.0.4758.80/base/allocator/partition_allocator/starscan/metadata_allocator.h	2022-02-05 16:11:45.519670294 +0000
@@ -39,6 +39,11 @@ class MetadataAllocator {
   }
 
   template <typename U>
+  bool operator==(const MetadataAllocator<U>&) const {
+    return true;
+  }
+
+  template <typename U>
   bool operator!=(const MetadataAllocator<U>& o) {
     return !operator==(o);
   }