Added ashmem_get_size_region() function.
This is needed by the MemoryFile changes in
https://android-git.corp.google.com/g/2714
where it is used to find out whether a file descriptor
refers to an ashmem region.
diff --git a/include/cutils/ashmem.h b/include/cutils/ashmem.h
index fd71352..0683bf2 100644
--- a/include/cutils/ashmem.h
+++ b/include/cutils/ashmem.h
@@ -18,6 +18,7 @@
int ashmem_set_prot_region(int fd, int prot);
int ashmem_pin_region(int fd, size_t offset, size_t len);
int ashmem_unpin_region(int fd, size_t offset, size_t len);
+int ashmem_get_size_region(int fd);
#ifdef __cplusplus
}