Migrate stack resource unwinding to Thread.

runtime/vm/longjump.cc

 // 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.
 
 #include "vm/longjump.h"
 
 #include "include/dart_api.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/isolate.h"
@@ skipping 24 matching lines @@
   return ((top_exit_frame_info == 0) || (jumpbuf_addr < top_exit_frame_info));
 }
 
 
 void LongJumpScope::Jump(int value, const Error& error) {
   // A zero is the default return value from setting up a LongJumpScope
   // using Set.
   ASSERT(value != 0);
   ASSERT(IsSafeToJump());
 
-  Isolate* isolate = Isolate::Current();
+  Thread* thread = Thread::Current();
+  Isolate* isolate = thread->isolate();
 
 #if defined(DEBUG)
 #define CHECK_REUSABLE_HANDLE(name)                                            \
   ASSERT(!isolate->reusable_##name##_handle_scope_active());
 REUSABLE_HANDLE_LIST(CHECK_REUSABLE_HANDLE)
 #undef CHECK_REUSABLE_HANDLE
 #endif  // defined(DEBUG)
 
   // Remember the error in the sticky error of this isolate.
   isolate->object_store()->set_sticky_error(error);
 
   // Destruct all the active StackResource objects.
-  StackResource::UnwindAbove(isolate, top_);
+  StackResource::UnwindAbove(thread, top_);
   longjmp(environment_, value);
   UNREACHABLE();
 }
 
 }  // namespace dart