Use ComputeHandlerFlags to find handlers, rather than manually encoding.

src/stub-cache.h

 // Copyright 2012 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 71 matching lines @@
 
   Handle<Code> FindIC(Handle<Name> name,
                       Handle<Map> stub_holder_map,
                       Code::Kind kind,
                       ExtraICState extra_state = kNoExtraICState,
                       InlineCacheHolderFlag cache_holder = OWN_MAP);
 
   Handle<Code> FindHandler(Handle<Name> name,
                            Handle<Map> map,
                            Code::Kind kind,
-                           InlineCacheHolderFlag cache_holder = OWN_MAP);
+                           InlineCacheHolderFlag cache_holder,
+                           Code::StubType type);
 
   Handle<Code> ComputeMonomorphicIC(Code::Kind kind,
                                     Handle<Name> name,
                                     Handle<HeapType> type,
                                     Handle<Code> handler,
                                     ExtraICState extra_ic_state);
 
   Handle<Code> ComputeLoadNonexistent(Handle<Name> name, Handle<HeapType> type);
 
   Handle<Code> ComputeKeyedLoadElement(Handle<Map> receiver_map);
@@ skipping 752 matching lines @@
   Handle<JSFunction> constant_function_;
   bool is_simple_api_call_;
   Handle<FunctionTemplateInfo> expected_receiver_type_;
   Handle<CallHandlerInfo> api_call_info_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_