Add missing Trace.beginSection

Bug: 175372375
Test: No-op changes.
Change-Id: I105293b9bc4988bee46081229046c8e937cfa9a9
Merged-In: I105293b9bc4988bee46081229046c8e937cfa9a9
(cherry picked from commit 3b3ea5cb0bfab19938a4de970aa3fcc14a9b2c2d)
1 file changed