[clang-tidy] Make deleted constructor public

Making them private was a way to hide the constructor, we can
explicitly delete them, which give a better compilation error message as
well.

Also see: https://stackoverflow.com/q/55205874

Bug: v8:10488
Change-Id: Iddc00b86e5481b90c20d9c68f1261f853ac8d5dd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2210778Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67990}

src/ast/scopes.h

@@ -102,6 +102,10 @@ class V8_EXPORT_PRIVATE Scope : public NON_EXPORTED_BASE(ZoneObject) {
     }
     inline explicit Snapshot(Scope* scope);
 
+    // Disallow copy and move.
+    Snapshot(const Snapshot&) = delete;
+    Snapshot(Snapshot&&) = delete;
+
     ~Snapshot() {
       // If we're still active, there was no arrow function. In that case outer
       // calls eval if it already called eval before this snapshot started, or
@@ -142,10 +146,6 @@ class V8_EXPORT_PRIVATE Scope : public NON_EXPORTED_BASE(ZoneObject) {
     Scope* top_inner_scope_;
     UnresolvedList::Iterator top_unresolved_;
     base::ThreadedList<Variable>::Iterator top_local_;
-
-    // Disallow copy and move.
-    Snapshot(const Snapshot&) = delete;
-    Snapshot(Snapshot&&) = delete;
   };
 
   enum class DeserializationMode { kIncludingVariables, kScopesOnly };