Instrumented libraries: work around a build issue in pixman.

BUG=449183
TBR=glider@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/920543003

Cr-Original-Commit-Position: refs/heads/master@{#315990}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 905851b176b07d53a799d4855bcd39ce9a82831e
1 file changed