Allow bootjars in system_ext.

Bug: 148385042
Test: Built and booted Pixel 3a both with and without a boot jar in system_ext.
Test: m test-art-host-gtest-hidden_api_test32
Test: m test-art-host-gtest-hidden_api_test64
Change-Id: I10ef0340b92aa60579ff39f888cb556dc2953f2a
diff --git a/libartbase/base/file_utils.h b/libartbase/base/file_utils.h
index b1d044a..941a623 100644
--- a/libartbase/base/file_utils.h
+++ b/libartbase/base/file_utils.h
@@ -109,6 +109,9 @@
 // Return whether the location is on system/framework (i.e. android_root/framework).
 bool LocationIsOnSystemFramework(const char* location);
 
+// Return whether the location is on system_ext/framework
+bool LocationIsOnSystemExtFramework(const char* location);
+
 // Return whether the location is on /apex/.
 bool LocationIsOnApex(const char* location);