Convert a few components from scoped_ptr to std::unique_ptr

components/storage_monitor/storage_monitor_chromeos.h

Index: components/storage_monitor/storage_monitor_chromeos.h
diff --git a/components/storage_monitor/storage_monitor_chromeos.h b/components/storage_monitor/storage_monitor_chromeos.h
index 84af559bc069bdae287bc37ee4fd8f4e9e85c785..7b3386b5ccc556bc3ea23b21bf12316836b7f686 100644
--- a/components/storage_monitor/storage_monitor_chromeos.h
+++ b/components/storage_monitor/storage_monitor_chromeos.h
@@ -14,11 +14,11 @@
 #endif
 
 #include <map>
+#include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 #include "chromeos/disks/disk_mount_manager.h"
@@ -84,9 +84,9 @@ class StorageMonitorCros : public StorageMonitor,
   // Mapping of relevant mount points and their corresponding mount devices.
   MountMap mount_map_;
 
-  scoped_ptr<device::MediaTransferProtocolManager>
+  std::unique_ptr<device::MediaTransferProtocolManager>
       media_transfer_protocol_manager_;
-  scoped_ptr<MediaTransferProtocolDeviceObserverLinux>
+  std::unique_ptr<MediaTransferProtocolDeviceObserverLinux>
       media_transfer_protocol_device_observer_;
 
   base::WeakPtrFactory<StorageMonitorCros> weak_ptr_factory_;