Complain about use before declaration.

tests/language/language_kernel.status

Index: tests/language/language_kernel.status
diff --git a/tests/language/language_kernel.status b/tests/language/language_kernel.status
index 72c410e7769100b50c6794b82b1a75f572f3cfac..772a6929cb5b8edfa27c4f43a5cfc095c54ca386 100644
--- a/tests/language/language_kernel.status
+++ b/tests/language/language_kernel.status
@@ -232,28 +232,12 @@ vm/optimized_stacktrace_test: Skip # Issue 28788
 [ $compiler == dartk && $mode == debug ]
 deopt_inlined_function_lazy_test: Skip
 hello_dart_test: Crash  # error: expected: cls.is_type_finalized()
-ref_before_declaration_test/00: Crash
-ref_before_declaration_test/01: Crash
-ref_before_declaration_test/02: Crash
-ref_before_declaration_test/03: Crash
-ref_before_declaration_test/04: Crash
-ref_before_declaration_test/05: Crash
-ref_before_declaration_test/06: Crash
-ref_before_declaration_test/07: Crash
 vm/lazy_deopt_vm_test: Crash
 
 # dartk: precompilation failures
 [ $compiler == dartkp ]
 const_syntax_test/08: Crash
 final_syntax_test/09: MissingCompileTimeError
-ref_before_declaration_test/00: Crash
-ref_before_declaration_test/01: Crash
-ref_before_declaration_test/02: Crash
-ref_before_declaration_test/03: Crash
-ref_before_declaration_test/04: Crash
-ref_before_declaration_test/05: Crash
-ref_before_declaration_test/06: Crash
-ref_before_declaration_test/07: Crash
 ref_before_declaration_test/none: Crash
 setter_declaration2_negative_test: Crash
 setter_declaration_negative_test: Crash
@@ -398,16 +382,7 @@ function_type_alias9_test/00: MissingCompileTimeError # Fixed in ahe's dev branc
 metadata_test: CompileTimeError # Fixed in ahe's dev branch.
 named_parameters_aggregated_test/04: MissingCompileTimeError # Fixed in ahe's dev branch.
 named_parameters_aggregated_test/06: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/00: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/01: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/02: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/03: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/04: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/05: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/06: MissingCompileTimeError # Fixed in ahe's dev branch.
-ref_before_declaration_test/07: MissingCompileTimeError # Fixed in ahe's dev branch.
 regress_29349_test: CompileTimeError # Fixed in ahe's dev branch.
-scope_variable_test/01: MissingCompileTimeError # Fixed in ahe's dev branch.
 
 [ $unchecked && ($compiler == dartk || $compiler == dartkp) ]
 const_conditional_test/08: MissingCompileTimeError # KernelVM bug: Constant evaluation.