Changes to pass the current isolate to all runtime and native calls.

runtime/vm/dart_api_impl.h

 // 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.
 
 #ifndef VM_DART_API_IMPL_H_
 #define VM_DART_API_IMPL_H_
 
 #include "vm/allocation.h"
 
 namespace dart {
 
 class ApiState;
 class LocalHandle;
 class Object;
 class PersistentHandle;
 class RawObject;
 
+
+#define DARTSCOPE(isolate)                                                    \
+  ASSERT(isolate != NULL);                                                    \
+  Zone zone(isolate);                                                         \
+  HANDLESCOPE(isolate);                                                       \
+
 class Api : AllStatic {
  public:
   // Creates a new local handle.
   static Dart_Handle NewLocalHandle(const Object& object);
 
   // Unwraps the raw object from the handle.
   static RawObject* UnwrapHandle(Dart_Handle object);
 
   // Validates and converts the passed in handle as a local handle.
   static LocalHandle* UnwrapAsLocalHandle(const ApiState& state,
@@ skipping 21 matching lines @@
   // Allocates space in the local zone.
   static uword Allocate(intptr_t size);
 
   // Reallocates space in the local zone.
   static uword Reallocate(uword ptr, intptr_t old_size, intptr_t new_size);
 };
 
 }  // namespace dart.
 
 #endif  // VM_DART_API_IMPL_H_