Always use arc::InstanceHolder<T>::GetInstanceForMethod

chrome/browser/chromeos/arc/arc_process_service.cc

 // Copyright 2016 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.
 //
 // The main point of this class is to cache ARC proc nspid<->pid mapping
 // globally. Since the calculation is costly, a dedicated worker thread is
 // used. All read/write of its internal data structure (i.e., the mapping)
 // should be on this thread.
 
 #include "chrome/browser/chromeos/arc/arc_process_service.h"
@@ skipping 227 matching lines @@
   base::PostTaskAndReplyWithResult(GetTaskRunner().get(), FROM_HERE,
                                    base::Bind(&GetArcSystemProcessList),
                                    callback);
 }
 
 bool ArcProcessService::RequestAppProcessList(
     RequestProcessListCallback callback) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   arc::mojom::ProcessInstance* process_instance =
-      arc_bridge_service()->process()->instance();
+      arc_bridge_service()->process()->GetInstanceForMethod(
+          "RequestProcessList");
   if (!process_instance) {
     return false;
   }
   process_instance->RequestProcessList(
       base::Bind(&ArcProcessService::OnReceiveProcessList,
                  weak_ptr_factory_.GetWeakPtr(), callback));
   return true;
 }
 
 void ArcProcessService::OnReceiveProcessList(
@@ skipping 10 matching lines @@
 
 scoped_refptr<base::SingleThreadTaskRunner> ArcProcessService::GetTaskRunner() {
   return heavy_task_thread_.task_runner();
 }
 
 inline ArcProcessService::NSPidToPidMap::NSPidToPidMap() {}
 
 inline ArcProcessService::NSPidToPidMap::~NSPidToPidMap() {}
 
 }  // namespace arc