Mount MTP devices in Chrome OS Files.app.

components/storage_monitor/storage_info.h

Index: components/storage_monitor/storage_info.h
diff --git a/components/storage_monitor/storage_info.h b/components/storage_monitor/storage_info.h
index d6f88540d32e9a10e9728a74001127c3e0756b4b..caebe1cd5ec98d73951c1b996b76f53fd51e47fc 100644
--- a/components/storage_monitor/storage_info.h
+++ b/components/storage_monitor/storage_info.h
@@ -69,6 +69,8 @@ class StorageInfo {
 
   static bool IsIPhotoDevice(const std::string& device_id);
 
+  static bool IsMTPDevice(const std::string& device_id);
+
   // Get the display name for the removable device represented by this
   // StorageInfo. Include the size for removable devices if |with_size| is true.
   base::string16 GetDisplayName(bool with_size) const;