Cleanup CallInterfaceDescriptor

src/arm64/code-stubs-arm64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ARM64_CODE_STUBS_ARM64_H_
 #define V8_ARM64_CODE_STUBS_ARM64_H_
 
 #include "src/ic-inl.h"
 
 namespace v8 {
@@ skipping 443 matching lines @@
   static void GenerateAsciiCharsCompareLoop(MacroAssembler* masm,
                                             Register left,
                                             Register right,
                                             Register length,
                                             Register scratch1,
                                             Register scratch2,
                                             Label* chars_not_equal);
 };
 
 
-struct PlatformCallInterfaceDescriptor {
+class PlatformCallInterfaceDescriptor {
+ public:
   explicit PlatformCallInterfaceDescriptor(
       TargetAddressStorageMode storage_mode)
       : storage_mode_(storage_mode) { }
 
   TargetAddressStorageMode storage_mode() { return storage_mode_; }
 
  private:
   TargetAddressStorageMode storage_mode_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CODE_STUBS_ARM64_H_