Revert "Move dart2js from sdk/lib/_internal/compiler to pkg/compiler"

pkg/pkg.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 276 matching lines @@
 intl/test/find_default_locale_standalone_test: Fail # Issue 8110
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 # These tests are runtime negative but statically positive, so we skip
 # them in the analyzer.
 mock/test/mock_regexp_negative_test: Skip
 mock/test/mock_stepwise_negative_test: Skip
 polymer/e2e_test/canonicalization: Skip
 polymer/e2e_test/experimental_boot: Skip
 
-compiler/samples/compile_loop/compile_loop: CompileTimeError  # Issue 16524
-
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 # This test uses third_party/pkg/perf_api/lib/perf_api.dart, which
 # contains illegal constant constructors.
 third_party/angular_tests/browser_test: CompileTimeError
 
 [ $compiler == dart2js && $runtime == none]
 polymer/e2e_test/canonicalization: Skip
 polymer/e2e_test/experimental_boot: Skip
 
 [ $compiler == dart2js && $csp ]
@@ skipping 179 matching lines @@
 third_party/angular_tests/browser_test/change_detection/dirty_checking_change_detector: Skip # Issue 17152
 
 [ $use_repository_packages ]
 analyzer/test/*: PubGetError
 
 [ $runtime == drt ]
 http/test/html/client_test: Skip # Issue 18566
 
 [ $system == windows ]
 analysis_server/test/integration/search/get_type_hierarchy_test: Pass, Fail # Issue 20436