Cleanup CallInterfaceDescriptor

src/arm/code-stubs-arm.h

 // Copyright 2012 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_ARM_CODE_STUBS_ARM_H_
 #define V8_ARM_CODE_STUBS_ARM_H_
 
 #include "src/ic-inl.h"
 
 namespace v8 {
@@ skipping 386 matching lines @@
   int MinorKey() {
     return LookupModeBits::encode(mode_);
   }
 
   class LookupModeBits: public BitField<LookupMode, 0, 1> {};
 
   LookupMode mode_;
 };
 
 
-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_ARM_CODE_STUBS_ARM_H_