mediaview: Mount ARC documents provider file system volumes.

components/arc/arc_service_manager.cc

 // Copyright 2015 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 "components/arc/arc_service_manager.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 33 matching lines @@
   for (auto& observer : manager_->observer_list_)
     observer.OnIntentFiltersUpdated();
 }
 
 ArcServiceManager::ArcServiceManager(
     scoped_refptr<base::TaskRunner> blocking_task_runner)
     : blocking_task_runner_(blocking_task_runner),
       intent_helper_observer_(base::MakeUnique<IntentHelperObserverImpl>(this)),
       arc_bridge_service_(base::MakeUnique<ArcBridgeService>()),
       icon_loader_(new ActivityIconLoader()),
-      activity_resolver_(new LocalActivityResolver()) {
+      activity_resolver_(new LocalActivityResolver()),
+      file_system_service_(nullptr) {

[Luis Héctor Chávez, 2017/01/10 18:51:35]

nit: can you initialize |file_system_service_ = nullptr| in the .h file to avoid
this?

[Shuhei Takahashi, 2017/01/11 15:20:43]

Done.

   DCHECK(!g_arc_service_manager);
   g_arc_service_manager = this;
 }
 
 ArcServiceManager::~ArcServiceManager() {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK_EQ(g_arc_service_manager, this);
   g_arc_service_manager = nullptr;
 }
 
@@ skipping 31 matching lines @@
   // Before actual shutdown, notify observers for clean up.
   for (auto& observer : observer_list_)
     observer.OnArcShutdown();
 
   icon_loader_ = nullptr;
   activity_resolver_ = nullptr;
   services_.clear();
 }
 
 }  // namespace arc