trace writer: Fix gcc build. am: 4a0ee4e0ef
trace writer: Fix gcc build.
am: 4a0ee4e0ef

Change-Id: I49e7056e24158b3f696dd86a140ffd857ad86d44

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto