Fix xcode build for real.

runtime/vm/flow_graph_compiler.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_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 253 matching lines @@
                     FlowGraph* flow_graph,
                     bool is_optimizing);
 
   ~FlowGraphCompiler();
 
   static bool SupportsUnboxedDoubles();
   static bool SupportsUnboxedMints();
   static bool SupportsSinCos();
   static bool SupportsUnboxedSimd128();
 
+  static intptr_t PlatformBlockedRegisterMask();
+
   // Accessors.
   Assembler* assembler() const { return assembler_; }
   const ParsedFunction& parsed_function() const { return parsed_function_; }
   const GrowableArray<BlockEntryInstr*>& block_order() const {
     return block_order_;
   }
 
   const FlowGraph& flow_graph() const { return flow_graph_; }
 
   DescriptorList* pc_descriptors_list() const {
@@ skipping 357 matching lines @@
   intptr_t lazy_deopt_pc_offset_;
 
   ZoneGrowableArray<const ICData*>* deopt_id_to_ic_data_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_