Convert content ConnectionFilter to OnBindInterface

services/service_manager/service_manager.cc

 // Copyright 2014 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.
 
 #include "services/service_manager/service_manager.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 194 matching lines @@
       std::stringstream ss;
       ss << "Connection InterfaceProviderSpec prevented service: "
          << params->source().name() << " from binding interface: "
          << params->interface_name() << " exposed by: " << identity_.name();
       LOG(ERROR) << ss.str();
       params->bind_interface_callback().Run(mojom::ConnectResult::ACCESS_DENIED,
                                             identity_.user_id());
       return false;
     }
 
-    params->bind_interface_callback().Run(mojom::ConnectResult::SUCCEEDED,
-                                          identity_.user_id());
+    if (!params->bind_interface_callback().is_null()) {
+      params->bind_interface_callback().Run(mojom::ConnectResult::SUCCEEDED,
+                                            identity_.user_id());
+    }
 
     pending_service_connections_++;
     service_->OnBindInterface(
         ServiceInfo(params->source(), source_specs),
         params->interface_name(),
         params->TakeInterfaceRequestPipe(),
         base::Bind(&Instance::OnConnectComplete, base::Unretained(this)));
     return true;
   }
 
@@ skipping 836 matching lines @@
     bool connected = instance->CallOnConnect(&params);
     DCHECK(connected);
   }
 }
 
 base::WeakPtr<ServiceManager> ServiceManager::GetWeakPtr() {
   return weak_ptr_factory_.GetWeakPtr();
 }
 
 }  // namespace service_manager