chore(material): clean up old workarounds with new features.

modules/angular2_material/src/core/constants.ts

@@ -1,7 +0,0 @@
-// TODO: switch to proper enums when we support them.
-
-// Key codes
-export const KEY_ESC = 27;
-export const KEY_SPACE = 32;
-export const KEY_UP = 38;
-export const KEY_DOWN = 40;

modules/angular2_material/src/core/key_codes.ts

@@ -0,0 +1,10 @@
+import {CONST} from 'angular2/src/facade/lang';
+
+// Can't use an enum because Dart doesn't support enum initializers.
+@CONST()
+export class KeyCodes {
+  @CONST() static ESCAPE = 27;
+  @CONST() static SPACE = 32;
+  @CONST() static UP = 38;
+  @CONST() static DOWN = 40;
+}

modules/angular2_material/src/core/theme.ts

@@ -1,10 +0,0 @@
-import {Directive} from 'angular2/angular2';
-
-@Directive({selector: '[md-theme]'})
-export class MdTheme {
-  color: string;
-
-  constructor() {
-    this.color = 'sky-blue'
-  }
-}