Move namer into javascript backend.

Move namer into javascript backend.

Committed: https://code.google.com/p/dart/source/detail?r=11937

[floitsch, 2012-09-05 21:27:46]

https://chromiumcodereview.appspot.com/10915104/diff/1/lib/compiler/implement...
File lib/compiler/implementation/closure.dart (right):

https://chromiumcodereview.appspot.com/10915104/diff/1/lib/compiler/implement...
lib/compiler/implementation/closure.dart:448: String closureName(Element
element) {
code directly copied from the Namer.

The name given to the closure class is independent from the namer (think
minifying or pretty-printing namer), and since the type-analysis uses the this
class too, it doesn't make sense to add a dependency on the backend.

[kasperl, 2012-09-06 07:47:53]

LGTM.

https://chromiumcodereview.appspot.com/10915104/diff/1/lib/compiler/implement...
File lib/compiler/implementation/compiler.dart (right):

https://chromiumcodereview.appspot.com/10915104/diff/1/lib/compiler/implement...
lib/compiler/implementation/compiler.dart:215: js_backend.Namer get namer =>
(backend as js_backend.JavaScriptBackend).namer;
This seems hacky. Looking forward to getting rid of this.

[ngeoffray, 2012-09-06 07:56:51]

LGTM