Add a has_media flag to VolumeMetadata.

ui/file_manager/file_manager/background/js/device_handler.js

Index: ui/file_manager/file_manager/background/js/device_handler.js
diff --git a/ui/file_manager/file_manager/background/js/device_handler.js b/ui/file_manager/file_manager/background/js/device_handler.js
index bf79b40c4fb6918d3a92c5b10f0c1c496c7af246..2405b39fb1eed8ef80ac935bc069a1e42fdad65d 100644
--- a/ui/file_manager/file_manager/background/js/device_handler.js
+++ b/ui/file_manager/file_manager/background/js/device_handler.js
@@ -308,8 +308,13 @@ DeviceHandler.prototype.onMountCompleted_ = function(event) {
   // If the current volume status is succeed and it should be handled in
   // Files.app, show the notification to navigate the volume.
   if (event.eventType === 'mount' && event.status === 'success') {
-    DeviceHandler.Notification.DEVICE_NAVIGATION.show(
-        event.volumeMetadata.devicePath);
+    if (!volume.hasMedia) {
+      DeviceHandler.Notification.DEVICE_NAVIGATION.show(
+          event.volumeMetadata.devicePath);
+    } else {
+      DeviceHandler.Notification.DEVICE_IMPORT.show(
+          event.volumeMetadata.devicePath);
+    }
   } else if (event.eventType === 'unmount') {
     DeviceHandler.Notification.DEVICE_NAVIGATION.hide(volume.devicePath);
   }