Use a dictionary-mode code cache on the map rather than a dual system.

src/factory.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_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "src/isolate.h"
 #include "src/messages.h"
 #include "src/type-feedback-vector.h"
@@ skipping 252 matching lines @@
 
   // Create a block context.
   Handle<Context> NewBlockContext(Handle<JSFunction> function,
                                   Handle<Context> previous,
                                   Handle<ScopeInfo> scope_info);
 
   // Allocate a new struct.  The struct is pretenured (allocated directly in
   // the old generation).
   Handle<Struct> NewStruct(InstanceType type);
 
-  Handle<CodeCache> NewCodeCache();
-
   Handle<AliasedArgumentsEntry> NewAliasedArgumentsEntry(
       int aliased_context_slot);
 
   Handle<AccessorInfo> NewAccessorInfo();
 
   Handle<Script> NewScript(Handle<String> source);
 
   // Foreign objects are pretenured when allocated by the bootstrapper.
   Handle<Foreign> NewForeign(Address addr,
                              PretenureFlag pretenure = NOT_TENURED);
@@ skipping 426 matching lines @@
 
   // Create a JSArray with no elements and no length.
   Handle<JSArray> NewJSArray(ElementsKind elements_kind,
                              PretenureFlag pretenure = NOT_TENURED);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FACTORY_H_