Eliminate dependencies on assemblers and code stubs in precompiled runtime.

runtime/vm/disassembler_x64.cc

 // 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.
 
+#include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
+#if defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)
+
 #include "vm/disassembler.h"
 
-#include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
-#if defined(TARGET_ARCH_X64)
 #include "platform/utils.h"
 #include "vm/allocation.h"
 #include "vm/heap.h"
 #include "vm/instructions.h"
 #include "vm/os.h"
 #include "vm/stack_frame.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
@@ skipping 1956 matching lines @@
     if (!DecodeLoadObjectFromPoolOrThread(pc, code, *object)) {
       *object = NULL;
     }
   }
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart
 
-#endif  // defined TARGET_ARCH_X64
+#endif  // defined(TARGET_ARCH_X64) && !defined(DART_PRECOMPILED_RUNTIME)