Allow dispatch to use a range of Class-ids in tests

runtime/vm/jit_optimizer.h

Index: runtime/vm/jit_optimizer.h
diff --git a/runtime/vm/jit_optimizer.h b/runtime/vm/jit_optimizer.h
index cbce308e8e58e8007dd1a5134c5ce91393379bad..23dd278db3d4671297dfbe95918f6e5a72f8ef35 100644
--- a/runtime/vm/jit_optimizer.h
+++ b/runtime/vm/jit_optimizer.h
@@ -52,6 +52,11 @@ class JitOptimizer : public FlowGraphVisitor {
 
   bool TryReplaceWithIndexedOp(InstanceCallInstr* call);
 
+  void TryExpandClassesInICData(const ICData& ic_data);
+  bool LookupMethodFor(int class_id,
+                       const ArgumentsDescriptor& args_desc,
+                       const String& name,
+                       Function* fn_return);
 
   bool TryReplaceWithBinaryOp(InstanceCallInstr* call, Token::Kind op_kind);
   bool TryReplaceWithUnaryOp(InstanceCallInstr* call, Token::Kind op_kind);