Add constantExpressionRequired to BodyBuilder.

tests/co19/co19-kernel.status

Index: tests/co19/co19-kernel.status
diff --git a/tests/co19/co19-kernel.status b/tests/co19/co19-kernel.status
index cfad788296c293ab0e95d222eba7ee612960e86a..3ab0cf9504e9c82b3cdca79556b26c59b7ad3dd5 100644
--- a/tests/co19/co19-kernel.status
+++ b/tests/co19/co19-kernel.status
@@ -6,7 +6,6 @@
 [ $compiler == dartk || $compiler == dartkp ]
 Language/Classes/Constructors/Constant_Constructors/initializer_not_a_constant_t03: MissingCompileTimeError
 Language/Classes/Constructors/Constant_Constructors/invalid_constant_initializer_t01: Crash
-Language/Classes/Constructors/Constant_Constructors/invalid_constant_initializer_t03: Crash
 Language/Classes/Constructors/Constant_Constructors/non_final_instance_variable_t01: MissingCompileTimeError
 Language/Classes/Constructors/Constant_Constructors/non_final_instance_variable_t02: MissingCompileTimeError
 Language/Classes/Constructors/Constant_Constructors/potentially_constant_expression_t02: MissingCompileTimeError
@@ -215,7 +214,6 @@ Language/Expressions/Instance_Creation/Const/accessibility_t04: MissingCompileTi
 Language/Expressions/Instance_Creation/Const/accessibility_t05: MissingCompileTimeError
 Language/Expressions/Instance_Creation/Const/accessibility_t06: MissingCompileTimeError
 Language/Expressions/Instance_Creation/Const/accessibility_t07: MissingCompileTimeError
-Language/Expressions/Instance_Creation/Const/arguments_t01: MissingCompileTimeError
 Language/Expressions/Instance_Creation/Const/arguments_t02: MissingCompileTimeError
 Language/Expressions/Instance_Creation/Const/arguments_t03: MissingCompileTimeError
 Language/Expressions/Instance_Creation/Const/constant_constructor_name_t01: MissingCompileTimeError