[cctest] Fix build failed when is_component_build is true

Bug: v8:12543

Change-Id: I6dc98dea4e713323c18666ecfff459cbd55d90d5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3383514Reviewed-by: Maya Lekova <mslekova@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#78639}

src/execution/simulator-base.cc

@@ -106,11 +106,6 @@ void SimulatorData::RegisterFunctionsAndSignatures(
   }
 }
 
-void SimulatorData::AddSignatureForTarget(Address target,
-                                          const EncodedCSignature& signature) {
-  target_to_signature_table_[target] = signature;
-}
-
 const EncodedCSignature& SimulatorData::GetSignatureForTarget(Address target) {
   base::MutexGuard guard(&signature_map_mutex_);
   auto entry = target_to_signature_table_.find(target);

src/execution/simulator-base.h

@@ -222,7 +222,9 @@ class SimulatorData {
 
  private:
   void AddSignatureForTarget(Address target,
-                             const EncodedCSignature& signature);
+                             const EncodedCSignature& signature) {
+    target_to_signature_table_[target] = signature;
+  }
 
   v8::base::Mutex signature_map_mutex_;
   typedef std::unordered_map<Address, EncodedCSignature> TargetToSignatureTable;