Begins work on ARM64, first assembler test.

runtime/vm/service_test.cc

 // 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.
 
+// TODO(zra): Remove when tests are ready to enable.
+#include "platform/globals.h"
+#if !defined(TARGET_ARCH_ARM64)
+
 #include "include/dart_debugger_api.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/globals.h"
 #include "vm/message_handler.h"
 #include "vm/object_id_ring.h"
 #include "vm/os.h"
 #include "vm/port.h"
 #include "vm/service.h"
@@ skipping 1305 matching lines @@
   EXPECT_SUBSTRING("\"type\":\"Profile\"", handler.msg());
 
   service_msg = Eval(h_lib, "[port, ['profile'], ['tags'], ['hidden']]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   // Expect error.
   EXPECT_SUBSTRING("\"type\":\"Error\"", handler.msg());
 }
 
 }  // namespace dart
+
+#endif  // !defined(TARGET_ARCH_ARM64)