[compiler] Remove CompilationInfo::abstract_code accessor.

src/compiler.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_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 189 matching lines @@
   bool is_this_defined() const;
 
   void set_parameter_count(int parameter_count) {
     DCHECK(IsStub());
     parameter_count_ = parameter_count;
   }
 
   bool has_bytecode_array() const { return !bytecode_array_.is_null(); }
   Handle<BytecodeArray> bytecode_array() const { return bytecode_array_; }
 
-  Handle<AbstractCode> abstract_code() const {
-    return has_bytecode_array() ? Handle<AbstractCode>::cast(bytecode_array())
-                                : Handle<AbstractCode>::cast(code());
-  }
-
   bool is_tracking_positions() const { return track_positions_; }
 
   bool is_calling() const {
     return GetFlag(kDeferredCalling) || GetFlag(kNonDeferredCalling);
   }
 
   void MarkAsDeferredCalling() { SetFlag(kDeferredCalling); }
 
   bool is_deferred_calling() const { return GetFlag(kDeferredCalling); }
 
@@ skipping 406 matching lines @@
   MUST_USE_RESULT Status SetLastStatus(Status status) {
     last_status_ = status;
     return last_status_;
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_