isolates refactor: this change introduces 'dart:isolate' as a library. This is a

compiler/dart-compiler.gyp

 # Copyright (c) 2011, 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.
 
 {
   'includes': [
     'sources.gypi',
     'test_sources.gypi',
     'corelib_sources.gypi',
     'compiler_corelib_sources.gypi',
     'domlib_sources.gypi',
     'htmllib_sources.gypi',
     'jsonlib_sources.gypi',
+    'isolatelib_sources.gypi',
   ],
   'targets': [
     {
       'target_name': 'dartc',
       'type': 'none',
       'variables': {
         # The Dartium build has this layout:
         # src/dart/compiler/dart.gyp (this file)
         # src/v8/src/d8.gyp
         'v8_location%': '../../v8',
@@ skipping 88 matching lines @@
             'dartc.xml',
             'domlib_sources.gypi',
             '<@(domlib_sources)',
             '<@(domlib_resources)',
             'htmllib_sources.gypi',
             '<@(htmllib_sources)',
             '<@(htmllib_resources)',
             'jsonlib_sources.gypi',
             '<@(jsonlib_sources)',
             '<@(jsonlib_resources)',
+            'isolatelib_sources.gypi',
+            '<@(isolatelib_sources)',
+            '<@(isolatelib_resources)',
           ],
           'outputs': [
             '<(INTERMEDIATE_DIR)/<(_target_name)/syslib.stamp',
             '<(INTERMEDIATE_DIR)/<(_target_name)/corelib.jar.stamp',
             '<(INTERMEDIATE_DIR)/<(_target_name)/domlib.jar.stamp',
             '<(INTERMEDIATE_DIR)/<(_target_name)/htmllib.jar.stamp',
             '<(INTERMEDIATE_DIR)/<(_target_name)/jsonlib.jar.stamp',
+            '<(INTERMEDIATE_DIR)/<(_target_name)/isolatelib.jar.stamp',
           ],
           'action': [
             '../third_party/apache_ant/v1_7_1/bin/ant',
             '-f', 'dartc.xml',
             '-Dbuild.dir=<(INTERMEDIATE_DIR)/<(_target_name)',
             '-Ddist.dir=<(PRODUCT_DIR)/compiler',
             'syslib_clean',
             'syslib',
           ],
         },
         {
           'message': 'Compiling dart system libraries to <(INTERMEDIATE_DIR)/<(_target_name)/api',
           'action_name': 'compile_systemlibrary',
           'inputs': [
             '<(PRODUCT_DIR)/dartc',
             '<(INTERMEDIATE_DIR)/<(_target_name)/syslib.stamp',
             'api.dart',
           ],
           'outputs': [
             '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/core/com/google/dart/corelib/corelib.dart.deps',
             '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/dom/dom/dom.dart.deps',
             '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/html/html/html.dart.deps',
             '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/json/json/json.dart.deps',
+            '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/isolate/isolate/isolate_compiler.dart.deps',
           ],
           'action': [
             '<(PRODUCT_DIR)/dartc', 'api.dart',
             '--fatal-warnings', '--fatal-type-errors',
             '--deprecated-generate-code',
             '-out', '<(INTERMEDIATE_DIR)/<(_target_name)/api',
           ],
         },
         {
           'message': 'Packaging dart:core artifacts',
@@ skipping 48 matching lines @@
             '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/json/json/json.dart.deps',
             'api.dart',
           ],
           'outputs': [
             '<(PRODUCT_DIR)/compiler/lib/jsonlib.jar',
           ],
           'action': [
             'jar', 'u0f', '<(PRODUCT_DIR)/compiler/lib/jsonlib.jar', '-C', '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/json', 'json',
           ],
         },
+        {
+          'message': 'Packaging dart:isolate artifacts',
+          'action_name': 'package_isolatelib_artifacts',
+          'inputs': [
+            '<(INTERMEDIATE_DIR)/<(_target_name)/isolatelib.jar.stamp',
+            '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/isolate/isolate/isolate_compiler.dart.deps',
+            'api.dart',
+          ],
+          'outputs': [
+            '<(PRODUCT_DIR)/compiler/lib/isolatelib.jar',
+          ],
+          'action': [
+            'jar', 'u0f', '<(PRODUCT_DIR)/compiler/lib/isolatelib.jar', '-C',
+            '<(INTERMEDIATE_DIR)/<(_target_name)/api/dart/isolate', 'isolate',
+          ],
+        },
       ],
     },
     {
       # GYP won't generate a catch-all target if there's only one target.
       'target_name': 'dummy',
       'type': 'none',
     },
   ],
 }