APM: adding a missing header when dumping files in APM
APM: adding a missing header when dumping files in APM

Change-Id: Ife8d45179354a1dd7525175e11a6016af2777910
Bug: webrtc:10255
Reviewed-on: https://webrtc-review.googlesource.com/c/120345
Reviewed-by: Per Åhgren <3616c2c8a2c30a769c5419f89b4a810ea6e2f079@webrtc.org>
Commit-Queue: Jesus de Vicente Pena <a15302662cee04f7e3009f08a9805bbb65c55269@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#26444}
ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc