Implement constructor kinds in the VM mirrors.

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
diff --git a/runtime/vm/parser.cc b/runtime/vm/parser.cc
index b128bf66ce5efc9d8eaf7ec0f741956929436b58..5499fe81a62b2e9564f3586baa2d2173b93aee3f 100644
--- a/runtime/vm/parser.cc
+++ b/runtime/vm/parser.cc
@@ -2523,6 +2523,7 @@ SequenceNode* Parser::ParseConstructor(const Function& func,
               ((LookaheadToken(2) == Token::kLPAREN) ||
               ((LookaheadToken(2) == Token::kPERIOD) &&
               (LookaheadToken(4) == Token::kLPAREN))));
+  func.set_is_redirecting(is_redirecting_constructor);
 
   GrowableArray<Field*> initialized_fields;
   LocalVariable* receiver = (*params.parameters)[0].var;
@@ -3294,6 +3295,7 @@ void Parser::ParseMethodOrConstructor(ClassDesc* members, MemberDesc* method) {
   // If this method is a redirecting factory, set the redirection information.
   if (!redirection_type.IsNull()) {
     ASSERT(func.IsFactory());
+    func.set_is_redirecting(true);
     func.SetRedirectionType(redirection_type);
     if (!redirection_identifier.IsNull()) {
       func.SetRedirectionIdentifier(redirection_identifier);