Disallow mixing in classes that have constructors.

tests/language/language.status

Index: tests/language/language.status
diff --git a/tests/language/language.status b/tests/language/language.status
index 8c5ec859c62a0825032ad6f453c621a4a0166ff0..52f544ce9d58fb674360fa88b93352c53ccbb5d6 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -66,6 +66,7 @@ mixin_extends_method_test: Fail
 mixin_mixin_test: Fail
 mixin_illegal_syntax_test/none: Fail
 mixin_illegal_superclass_test/none: Fail
+mixin_illegal_constructor_test/none: Fail
 mixin_illegal_static_access_test: Fail
 
 [ $compiler == none && ($system == macos || $system == linux) && $arch == ia32 && $checked ]
@@ -288,6 +289,7 @@ call_through_getter_test: Fail
 mixin_illegal_syntax_test/03: Pass # issue 8006
 mixin_illegal_syntax_test/13: Fail # issue 8006
 mixin_illegal_syntax_test/none: Fail # issue 8006
+
 mixin_illegal_superclass_test/01: Fail # issue 8022
 mixin_illegal_superclass_test/02: Fail # issue 8022
 mixin_illegal_superclass_test/03: Fail # issue 8022
@@ -319,6 +321,22 @@ mixin_illegal_superclass_test/28: Fail # issue 8022
 mixin_illegal_superclass_test/29: Fail # issue 8022
 mixin_illegal_superclass_test/30: Fail # issue 8022
 
+mixin_illegal_constructor_test/01: Fail # issue 8025
+mixin_illegal_constructor_test/02: Fail # issue 8025
+mixin_illegal_constructor_test/03: Fail # issue 8025
+mixin_illegal_constructor_test/04: Fail # issue 8025
+mixin_illegal_constructor_test/05: Fail # issue 8025
+mixin_illegal_constructor_test/06: Fail # issue 8025
+mixin_illegal_constructor_test/07: Fail # issue 8025
+mixin_illegal_constructor_test/08: Fail # issue 8025
+mixin_illegal_constructor_test/09: Fail # issue 8025
+mixin_illegal_constructor_test/10: Fail # issue 8025
+mixin_illegal_constructor_test/11: Fail # issue 8025
+mixin_illegal_constructor_test/12: Fail # issue 8025
+mixin_illegal_constructor_test/13: Fail # issue 8025
+mixin_illegal_constructor_test/14: Fail # issue 8025
+mixin_illegal_constructor_test/15: Fail # issue 8025
+mixin_illegal_constructor_test/16: Fail # issue 8025
 
 #
 # Add new dartc annotations above in alphabetical order
@@ -386,16 +404,17 @@ many_overridden_no_such_method_test: Fail, Pass, OK # Fails in minified mode, te
 overridden_no_such_method_test: Fail, Pass, OK # Fails in minified mode, test depends on method names.
 
 # Mixins fail on the VM.
-mixin_field_test: Fail                    # VM issue
-mixin_is_test: Fail                       # VM issue
-mixin_method_test: Fail                   # VM issue
-mixin_naming_test: Fail                   # VM issue
-mixin_extends_field_test: Fail            # VM issue
-mixin_extends_is_test: Fail               # VM issue
-mixin_extends_method_test: Fail           # VM issue
-mixin_mixin_test: Fail                    # VM issue
-mixin_illegal_syntax_test/none: Fail      # VM issue
-mixin_illegal_superclass_test/none: Fail  # VM issue
+mixin_field_test: Fail                     # VM issue
+mixin_is_test: Fail                        # VM issue
+mixin_method_test: Fail                    # VM issue
+mixin_naming_test: Fail                    # VM issue
+mixin_extends_field_test: Fail             # VM issue
+mixin_extends_is_test: Fail                # VM issue
+mixin_extends_method_test: Fail            # VM issue
+mixin_mixin_test: Fail                     # VM issue
+mixin_illegal_syntax_test/none: Fail       # VM issue
+mixin_illegal_superclass_test/none: Fail   # VM issue
+mixin_illegal_constructor_test/none: Fail  # VM issue
 
 # Malformed types not handled as unresolved:
 import_core_prefix_test: Fail