Instrumented libraries: fix pulseaudio build on Trusty.

This time for real.

BUG=414189
TBR=glider@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/714963002

Cr-Original-Commit-Position: refs/heads/master@{#303678}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: eba7d4b5dcbd3e01c6e1962cdd3af7415269a886
2 files changed