Fix a bunch of IWYU violators that don't include scoped_ptr.h

dbus/object_proxy.h

 // Copyright (c) 2012 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.
 
 #ifndef DBUS_OBJECT_PROXY_H_
 #define DBUS_OBJECT_PROXY_H_
 
 #include <dbus/dbus.h>
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/strings/string_piece.h"
 #include "base/time/time.h"
 #include "dbus/dbus_export.h"
 #include "dbus/object_path.h"
 
 namespace dbus {
 
 class Bus;
 class ErrorResponse;
 class MethodCall;
@@ skipping 294 matching lines @@
   std::string service_name_owner_;
 
   std::set<DBusPendingCall*> pending_calls_;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectProxy);
 };
 
 }  // namespace dbus
 
 #endif  // DBUS_OBJECT_PROXY_H_