Mark KeysetHandle::GetPublicKeysetHandle as ABSL_DEPRECATE_AND_INLINE.

PiperOrigin-RevId: 578232638
Change-Id: Ib917780b01872cce4275729958dfd310a50c3b2f

tink/core/keyset_handle.cc

@@ -428,11 +428,6 @@ KeysetHandle::GetPublicKeysetHandle(const KeyGenConfiguration& config) const {
       new KeysetHandle(std::move(public_keyset), *entries));
 }
 
-util::StatusOr<std::unique_ptr<KeysetHandle>>
-KeysetHandle::GetPublicKeysetHandle() const {
-  return GetPublicKeysetHandle(KeyGenConfigGlobalRegistry());
-}
-
 crypto::tink::util::StatusOr<uint32_t> KeysetHandle::AddToKeyset(
     const google::crypto::tink::KeyTemplate& key_template, bool as_primary,
     const KeyGenConfiguration& config, Keyset* keyset) {

tink/keyset_handle.h

@@ -206,8 +206,11 @@ class KeysetHandle {
   // private keys in this handle. Relies on key type managers stored in the
   // global registry to do so. Returns an error if this handle contains keys
   // that are not private keys.
+  ABSL_DEPRECATED("Inline this function's body at its call sites")
   crypto::tink::util::StatusOr<std::unique_ptr<KeysetHandle>>
-  GetPublicKeysetHandle() const;
+  GetPublicKeysetHandle() const {
+    return GetPublicKeysetHandle(crypto::tink::KeyGenConfigGlobalRegistry());
+  }
 
   // Creates a wrapped primitive using this keyset handle and config, which
   // stores necessary primitive wrappers and key type managers.