[llvm] [JSON][NFC] Support `print` and `dump` methods in `json::Value` (PR #129302)

[Nikita Popov via llvm-commits]

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@@ -472,6 +472,14 @@ class Value {
     return LLVM_LIKELY(Type == T_Array) ? &as<json::Array>() : nullptr;
   }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+  void print(llvm::raw_ostream &OS) const;
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nikic wrote:

Do we need print() if we already have operator<<? Esp. as they don't quite match in this implementation.

https://github.com/llvm/llvm-project/pull/129302