Move generated files to gen/.

test/codegen/expect/syncstar_syntax.js

-dart_library.library('syncstar_syntax', null, /* Imports */[
-  'dart_sdk',
-  'expect'
-], function(exports, dart_sdk, expect) {
-  'use strict';
-  const core = dart_sdk.core;
-  const dart = dart_sdk.dart;
-  const dartx = dart_sdk.dartx;
-  const expect$ = expect.expect;
-  const syncstar_syntax = Object.create(null);
-  syncstar_syntax.foo = function() {
-    return dart.syncStar(function*() {
-      yield 1;
-      yield* dart.list([2, 3], core.int);
-    }, core.int);
-  };
-  dart.fn(syncstar_syntax.foo, core.Iterable$(core.int), []);
-  syncstar_syntax.Class = class Class extends core.Object {
-    bar() {
-      return dart.syncStar(function*() {
-        yield 1;
-        yield* dart.list([2, 3], core.int);
-      }, core.int);
-    }
-    static baz() {
-      return dart.syncStar(function*() {
-        yield 1;
-        yield* dart.list([2, 3], core.int);
-      }, core.int);
-    }
-  };
-  dart.setSignature(syncstar_syntax.Class, {
-    methods: () => ({bar: [core.Iterable$(core.int), []]}),
-    statics: () => ({baz: [core.Iterable$(core.int), []]}),
-    names: ['baz']
-  });
-  syncstar_syntax.main = function() {
-    function qux() {
-      return dart.syncStar(function*() {
-        yield 1;
-        yield* dart.list([2, 3], core.int);
-      }, core.int);
-    }
-    dart.fn(qux, core.Iterable$(core.int), []);
-    expect$.Expect.listEquals(dart.list([1, 2, 3], core.int), syncstar_syntax.foo()[dartx.toList]());
-    expect$.Expect.listEquals(dart.list([1, 2, 3], core.int), new syncstar_syntax.Class().bar()[dartx.toList]());
-    expect$.Expect.listEquals(dart.list([1, 2, 3], core.int), syncstar_syntax.Class.baz()[dartx.toList]());
-    expect$.Expect.listEquals(dart.list([1, 2, 3], core.int), qux()[dartx.toList]());
-  };
-  dart.fn(syncstar_syntax.main);
-  // Exports:
-  exports.syncstar_syntax = syncstar_syntax;
-});