Drop redundant FullCodeGenerator::prepared_bailout_ids_.

src/full-codegen.cc

Index: src/full-codegen.cc
diff --git a/src/full-codegen.cc b/src/full-codegen.cc
index 7db8a5680edaf27e49fcff5a3c8239d635951392..6ae927c9018a16a5462f2448f5ae79bdc3e997a1 100644
--- a/src/full-codegen.cc
+++ b/src/full-codegen.cc
@@ -452,9 +452,12 @@ void FullCodeGenerator::PrepareForBailoutForId(BailoutId id, State state) {
   unsigned pc_and_state =
       StateField::encode(state) | PcField::encode(masm_->pc_offset());
   ASSERT(Smi::IsValid(pc_and_state));
+#ifdef DEBUG
+  for (int i = 0; i < bailout_entries_.length(); ++i) {
+    ASSERT(bailout_entries_[i].id != id);
+  }
+#endif
   BailoutEntry entry = { id, pc_and_state };
-  ASSERT(!prepared_bailout_ids_.Contains(id.ToInt()));
-  prepared_bailout_ids_.Add(id.ToInt(), zone());
   bailout_entries_.Add(entry, zone());
 }