First cut at _spawnUri rpc in the vm service.

runtime/vm/bootstrap_natives.h

 // 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.
 
 #ifndef VM_BOOTSTRAP_NATIVES_H_
 #define VM_BOOTSTRAP_NATIVES_H_
 
 #include "vm/native_entry.h"
 
 // bootstrap dart natives used in the core dart library.
@@ skipping 347 matching lines @@
   V(VMService_SendIsolateServiceMessage, 2)                                    \
   V(VMService_SendRootServiceMessage, 1)                                       \
   V(VMService_SendObjectRootServiceMessage, 1)                                 \
   V(VMService_OnStart, 0)                                                      \
   V(VMService_OnExit, 0)                                                       \
   V(VMService_OnServerAddressChange, 1)                                        \
   V(VMService_ListenStream, 1)                                                 \
   V(VMService_CancelStream, 1)                                                 \
   V(VMService_RequestAssets, 0)                                                \
   V(VMService_DecodeAssets, 1)                                                 \
+  V(VMService_spawnUriNotify, 2)                                               \
 
 // List of bootstrap native entry points used in the dart:mirror library.
 #define MIRRORS_BOOTSTRAP_NATIVE_LIST(V)                                       \
   V(Mirrors_evalInLibraryWithPrivateKey, 2)                                    \
   V(Mirrors_makeLocalClassMirror, 1)                                           \
   V(Mirrors_makeLocalTypeMirror, 1)                                            \
   V(Mirrors_mangleName, 2)                                                     \
   V(MirrorReference_equals, 2)                                                 \
   V(MirrorSystem_libraries, 0)                                                 \
   V(MirrorSystem_isolate, 0)                                                   \
@@ skipping 55 matching lines @@
 #ifndef PRODUCT
   MIRRORS_BOOTSTRAP_NATIVE_LIST(DECLARE_BOOTSTRAP_NATIVE)
 #endif
 
 #undef DECLARE_BOOTSTRAP_NATIVE
 };
 
 }  // namespace dart
 
 #endif  // VM_BOOTSTRAP_NATIVES_H_