[compiler] Drop the CompareNilIC.

src/ic/ic-compiler.h

 // Copyright 2014 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_IC_IC_COMPILER_H_
 #define V8_IC_IC_COMPILER_H_
 
 #include "src/ic/access-compiler.h"
 
 namespace v8 {
@@ skipping 15 matching lines @@
       Handle<Map> receiver_map, ExtraICState extra_ic_state);
 
   static Handle<Code> ComputeKeyedStoreMonomorphicHandler(
       Handle<Map> receiver_map, LanguageMode language_mode,
       KeyedAccessStoreMode store_mode);
   static void ComputeKeyedStorePolymorphicHandlers(
       MapHandleList* receiver_maps, MapHandleList* transitioned_maps,
       CodeHandleList* handlers, KeyedAccessStoreMode store_mode,
       LanguageMode language_mode);
 
-  // Compare nil
-  static Handle<Code> ComputeCompareNil(Handle<Map> receiver_map,
-                                        CompareNilICStub* stub);
-
   // Helpers
   // TODO(verwaest): Move all uses of these helpers to the PropertyICCompiler
   // and make the helpers private.
   static void GenerateRuntimeSetProperty(MacroAssembler* masm,
                                          LanguageMode language_mode);
 
 
  private:
   PropertyICCompiler(Isolate* isolate, Code::Kind kind,
                      ExtraICState extra_ic_state = kNoExtraICState,
@@ skipping 46 matching lines @@
   }
 
   const ExtraICState extra_ic_state_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_IC_IC_COMPILER_H_