A64: Synchronize with r18642.

src/a64/code-stubs-a64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 483 matching lines @@
   static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm,
                                             Register left,
                                             Register right,
                                             Register length,
                                             Register scratch1,
                                             Register scratch2,
                                             Label* chars_not_equal);
 };
 
 
+struct PlatformCallInterfaceDescriptor {
+  explicit PlatformCallInterfaceDescriptor(
+      TargetAddressStorageMode storage_mode)
+      : storage_mode_(storage_mode) { }
+
+  TargetAddressStorageMode storage_mode() { return storage_mode_; }
+
+ private:
+  TargetAddressStorageMode storage_mode_;
+};
+
+
 } }  // namespace v8::internal
 
 #endif  // V8_A64_CODE_STUBS_A64_H_