Remove explicit default destructor to workaround clang bug

Bug: 1133353
Change-Id: I22eda82761975ec6ae36d28e83a40e3d5c3ef836
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2438485Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Arthur Eubanks <aeubanks@google.com>
Cr-Commit-Position: refs/heads/master@{#812092}

third_party/blink/renderer/bindings/core/v8/callback_invoke_helper.h

@@ -59,8 +59,6 @@ class CallbackInvokeHelper final {
         backup_incumbent_scope_(
             callback->IncumbentScriptState()->GetContext()) {}
 
-  ~CallbackInvokeHelper() = default;
-
   bool PrepareForCall(V8ValueOrScriptWrappableAdapter callback_this);
 
   bool Call(int argc, v8::Local<v8::Value>* argv);