APPBROWSER-359: Sync tensor in GC benchmark tests

Change-Id: I22c1aa92e70d6143bbcec90e9e7de9f1ce1c1e55
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/114635
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
diff --git a/tests/framework/TestCase.h b/tests/framework/TestCase.h
index dbb9312..18dd12e 100644
--- a/tests/framework/TestCase.h
+++ b/tests/framework/TestCase.h
@@ -42,6 +42,7 @@
 public:
     virtual void do_setup() {};
     virtual void do_run() {};
+    virtual void do_sync() {};
     virtual void do_teardown() {};
 
     /** Default destructor. */