mediaview: Mount ARC documents provider file system volumes.

components/arc/arc_service_manager.cc

Index: components/arc/arc_service_manager.cc
diff --git a/components/arc/arc_service_manager.cc b/components/arc/arc_service_manager.cc
index 9204fef44844ccd7fc9ea29da2e6ba91aaba29fe..6d1b338ffb4d68a6d2e5d326678edae2813233a3 100644
--- a/components/arc/arc_service_manager.cc
+++ b/components/arc/arc_service_manager.cc
@@ -51,7 +51,8 @@ ArcServiceManager::ArcServiceManager(
       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;
 }