Fix implicit super constructor calls for sub-classes of native field wrappers.

Fix implicit super constructor calls for sub-classes of native field wrappers.

The current code does not add implicit super calls for any sub-classes
of native field wrappers. It should only omit them from the actual
native field wrappers.

I encountered this issue when looking into dartbug.com/5301.

The test in the parser is not pretty. However, since the native field
wrappers can be generated through the API a better solution was not
immediate. I wanted to check if the class was from the
dart:nativewrappers library, but through the API you can create
native wrappers in any other library as well.

R=hausner@google.com,asiva@google.com
BUG=

Committed: https://code.google.com/p/dart/source/detail?r=12679

[hausner, 2012-09-20 17:41:56]

lgtm

[siva, 2012-09-20 20:58:40]

LGTM.

Thanks for fixing this.

Maybe at some point we should add an method in class
CallSuperConstructor() which would include all these
filters. There was also the comment about not calling
the super of Object which is an empty method anyway.
We could merge that too. (All this for another CL).