Update pubspecs and dependencies to get pkgbuild tests working.

third_party/pkg/angular/perf/lexer_perf.dart

-library lexer_perf;
-
-import '_perf.dart';
-import 'package:angular/core/parser/lexer.dart';
-
-main() {
-  Lexer lexer = new Lexer();
-  time('ident', () =>
-      lexer.call('ctrl foo baz ctrl.foo ctrl.bar ctrl.baz'));
-  time('ident-path', () =>
-      lexer.call('a.b a.b.c a.b.c.d a.b.c.d.e.f'));
-  time('num', () =>
-      lexer.call('1 23 34 456 12341234 12351235'));
-  time('num-double', () =>
-      lexer.call('.0 .1 .12 0.123 0.1234'));
-  time('string', () =>
-      lexer.call("'quick brown dog and fox say what'"));
-  time('string-escapes', () =>
-      lexer.call("quick '\\' brown \u1234 dog and fox\n\rsay what'"));
-}