Revert r43217, r43215, r43208, r43207, and r43202.

runtime/vm/isolate.h

 // Copyright (c) 2013, 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.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/base_isolate.h"
@@ skipping 390 matching lines @@
     gc_epilogue_callback_ = callback;
   }
 
   static void SetCreateCallback(Dart_IsolateCreateCallback cb) {
     create_callback_ = cb;
   }
   static Dart_IsolateCreateCallback CreateCallback() {
     return create_callback_;
   }
 
+  static void SetServiceCreateCallback(Dart_ServiceIsolateCreateCalback cb) {
+    service_create_callback_ = cb;
+  }
+  static Dart_ServiceIsolateCreateCalback ServiceCreateCallback() {
+    return service_create_callback_;
+  }
+
   static void SetInterruptCallback(Dart_IsolateInterruptCallback cb) {
     interrupt_callback_ = cb;
   }
   static Dart_IsolateInterruptCallback InterruptCallback() {
     return interrupt_callback_;
   }
 
   static void SetVmStatsCallback(Dart_IsolateInterruptCallback cb) {
     vmstats_callback_ = cb;
   }
@@ skipping 303 matching lines @@
   static Dart_IsolateCreateCallback create_callback_;
   static Dart_IsolateInterruptCallback interrupt_callback_;
   static Dart_IsolateUnhandledExceptionCallback unhandled_exception_callback_;
   static Dart_IsolateShutdownCallback shutdown_callback_;
   static Dart_FileOpenCallback file_open_callback_;
   static Dart_FileReadCallback file_read_callback_;
   static Dart_FileWriteCallback file_write_callback_;
   static Dart_FileCloseCallback file_close_callback_;
   static Dart_EntropySource entropy_source_callback_;
   static Dart_IsolateInterruptCallback vmstats_callback_;
+  static Dart_ServiceIsolateCreateCalback service_create_callback_;
 
   // Manage list of existing isolates.
   static void AddIsolateTolist(Isolate* isolate);
   static void RemoveIsolateFromList(Isolate* isolate);
   static void CheckForDuplicateThreadState(InterruptableThreadState* state);
   static Monitor* isolates_list_monitor_;
   static Isolate* isolates_list_head_;
 
 #define REUSABLE_FRIEND_DECLARATION(name)                                      \
   friend class Reusable##name##HandleScope;
@@ skipping 118 matching lines @@
   uint8_t* serialized_args_;
   intptr_t serialized_args_len_;
   uint8_t* serialized_message_;
   intptr_t serialized_message_len_;
   bool paused_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_