Rename MountService to StorageManagerService.

Bug: 30977067
Test: Existing tests pass
Change-Id: Ieac0f11c2b249dcd60441b14c1f391e6f8131d42
diff --git a/libs/storage/IMountService.cpp b/libs/storage/IMountService.cpp
index fe1ee02..fa3d8bd 100644
--- a/libs/storage/IMountService.cpp
+++ b/libs/storage/IMountService.cpp
@@ -553,7 +553,7 @@
     }
 };
 
-IMPLEMENT_META_INTERFACE(MountService, "android.os.storage.IMountService")
+IMPLEMENT_META_INTERFACE(MountService, "android.os.storage.IStorageManager")
 
 // ----------------------------------------------------------------------