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..2fb591a5e8feba3ecfdb2f9cd5bb5834c8aeaae7 100644
--- a/components/arc/arc_service_manager.cc
+++ b/components/arc/arc_service_manager.cc
@@ -12,6 +12,7 @@
 #include "components/arc/arc_bridge_service.h"
 #include "components/arc/arc_session.h"
 #include "components/arc/arc_session_runner.h"
+#include "components/arc/file_system/arc_file_system_observer.h"
 #include "components/arc/intent_helper/arc_intent_helper_observer.h"
 
 namespace arc {
@@ -45,10 +46,33 @@ void ArcServiceManager::IntentHelperObserverImpl::OnIntentFiltersUpdated() {
     observer.OnIntentFiltersUpdated();
 }
 
+class ArcServiceManager::FileSystemObserverImpl : public ArcFileSystemObserver {
+ public:
+  explicit FileSystemObserverImpl(ArcServiceManager* manager);
+  ~FileSystemObserverImpl() override = default;
+
+ private:
+  void OnFileSystemsReady() override;
+  ArcServiceManager* const manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(FileSystemObserverImpl);
+};
+
+ArcServiceManager::FileSystemObserverImpl::FileSystemObserverImpl(
+    ArcServiceManager* manager)
+    : manager_(manager) {}
+
+void ArcServiceManager::FileSystemObserverImpl::OnFileSystemsReady() {
+  DCHECK(manager_->thread_checker_.CalledOnValidThread());
+  for (auto& observer : manager_->observer_list_)
+    observer.OnFileSystemsReady();
+}
+
 ArcServiceManager::ArcServiceManager(
     scoped_refptr<base::TaskRunner> blocking_task_runner)
     : blocking_task_runner_(blocking_task_runner),
       intent_helper_observer_(base::MakeUnique<IntentHelperObserverImpl>(this)),
+      file_system_observer_(base::MakeUnique<FileSystemObserverImpl>(this)),
       arc_bridge_service_(base::MakeUnique<ArcBridgeService>()),
       icon_loader_(new ActivityIconLoader()),
       activity_resolver_(new LocalActivityResolver()) {