Do not delete blink::WebRTCCertificateCallback on non-main thread

base/memory/ptr_util.h

Index: base/memory/ptr_util.h
diff --git a/base/memory/ptr_util.h b/base/memory/ptr_util.h
index 8747ac9463323865a28eb7d0baf9a6367ab7b5df..e975f6739ce556cb4edec3734ffd8994ec4cf07b 100644
--- a/base/memory/ptr_util.h
+++ b/base/memory/ptr_util.h
@@ -13,9 +13,9 @@ namespace base {
 // Helper to transfer ownership of a raw pointer to a std::unique_ptr<T>.
 // Note that std::unique_ptr<T> has very different semantics from
 // std::unique_ptr<T[]>: do not use this helper for array allocations.
-template <typename T>
-std::unique_ptr<T> WrapUnique(T* ptr) {
-  return std::unique_ptr<T>(ptr);
+template <typename T, typename D = std::default_delete<T>>
+std::unique_ptr<T, D> WrapUnique(T* ptr, D deleter = D()) {
+  return std::unique_ptr<T, D>(ptr, std::move(deleter));
 }
 
 namespace internal {