iwyu: Use callback_old.h where appropriate, part 1.

webkit/glue/cpp_bound_class.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /*
   CppBoundClass class:
   This base class serves as a parent for C++ classes designed to be bound to
   JavaScript objects.
 
   Subclasses should define the constructor to build the property and method
   lists needed to bind this class to a JS object.  They should also declare
   and define member variables and methods to be exposed to JS through
   that object.
 
   See cpp_binding_example.{h|cc} for an example.
 */
 
 #ifndef WEBKIT_GLUE_CPP_BOUNDCLASS_H__
 #define WEBKIT_GLUE_CPP_BOUNDCLASS_H__
 
 #include <map>
 #include <vector>
 
 #include "webkit/glue/cpp_variant.h"
 
-#include "base/callback.h"
+#include "base/callback_old.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace WebKit {
 class WebFrame;
 }
 
 typedef std::vector<CppVariant> CppArgumentList;
 
 // CppBoundClass lets you map Javascript method calls and property accesses
 // directly to C++ method calls and CppVariant* variable access.
@@ skipping 134 matching lines @@
   CppVariant self_variant_;
 
   // True if our np_object has been bound to a WebFrame, in which case it must
   // be unregistered with V8 when we delete it.
   bool bound_to_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(CppBoundClass);
 };
 
 #endif  // CPP_BOUNDCLASS_H__