"Add support for the new function-type syntax." # e4999a6310.
"In function-type test: remove unused variables, make type stronger." # 02ffb3b140.
Reason to revert:
We found user code breaks because of ambiguous cases like this:
```
class Function extends Foo {
Function() : super();
}
```
Today this fails when trying to parse the constructor.
We need to:
* indicate this is not allowed anymore (probably at the class declaration)
* allow it until we are ready to make it a breaking change (by maybe
adding a special exception to allow this ambiguity in the syntax).
* consider the language change to see whether we can prevent the breaking
change if we use a different keyword.
BUG=
R=floitsch@google.com
Review-Url: https://codereview.chromium.org/2638063003 .
Sigmund Cherem
c64c351539