Add @override annotation to known overriden methods

Add @override annotation to known overriden methods

* Does not add the annotation to interface method implementations

[Chinmay, 2015-07-09 21:37:09]

chinmaygarde@google.com changed reviewers:
+ abarth@chromium.org, eseidel@chromium.org, ianh@google.com

[Hixie, 2015-07-09 21:48:46]

How does one make sure that one doesn't break this?

[Chinmay, 2015-07-09 21:52:16]

On 2015/07/09 at 21:48:46, ianh wrote:
> How does one make sure that one doesn't break this?

I am working on making Dart analyzer tell you when you do. This just adds the
annotation to all known overrides. For new code, if you are overriding a method,
just add the annotation. If you miss it, its no big deal since it is very
obvious that the annotation when in an IDE, we can add the missing one as we
find them.

[Chinmay, 2015-07-09 22:30:39]

On 2015/07/09 at 21:52:16, Chinmay wrote:
> On 2015/07/09 at 21:48:46, ianh wrote:
> > How does one make sure that one doesn't break this?
> 
> I am working on making Dart analyzer tell you when you do. This just adds the
annotation to all known overrides. For new code, if you are overriding a method,
just add the annotation. If you miss it, its no big deal since it is very
obvious that the annotation when in an IDE, we can add the missing one as we
find them.

Closing. Discussion in IRC