The builder failed shortly: https://uberchromegw.corp.google.com/i/chromeos.chrome/builders/x86-alex-tot-chrome-pfq-informational/builds/19891

chromeos-chrome-52.0.2724.0_alpha-r1: [29/8106] SOLINK lib/libdisplay_compositor.so
chromeos-chrome-52.0.2724.0_alpha-r1: FAILED: if [ ! -e lib/libdisplay_compositor.so -o ! -e lib/libdisplay_compositor.so.TOC ]; then i686-pc-linux-gnu-g++ -B/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.25.51-gold -shared -Wl,-O1 -Wl,-O2 -Wl,--as-needed -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -pthread -Wl,-z,noexecstack -fPIC -fuse-ld=gold -Wl,--disable-new-dtags -m32 --sysroot=/build/x86-alex -L/build/x86-alex/lib -Wl,-rpath-link=/build/x86-alex/lib -L/build/x86-alex/usr/lib -Wl,-rpath-link=/build/x86-alex/usr/lib -L/build/x86-alex/usr/local/lib -Wl,-rpath-link=/build/x86-alex/usr/local/lib -L/build/x86-alex/usr/i686-pc-linux-gnu/lib -Wl,-rpath-link=/build/x86-alex/usr/i686-pc-linux-gnu/lib -Wl,--icf=all -Wl,-O1 -Wl,--as-needed -Wl,--gc-sections -o lib/libdisplay_compositor.so -Wl,-soname=libdisplay_compositor.so @lib/libdisplay_compositor.so.rsp && { readelf -d lib/libdisplay_compositor.so | grep SONAME ; nm -gD -f p lib/libdisplay_compositor.so | cut -f1-2 -d' '; } > lib/libdisplay_compositor.so.TOC; else i686-pc-linux-gnu-g++ -B/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.25.51-gold -shared -Wl,-O1 -Wl,-O2 -Wl,--as-needed -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -pthread -Wl,-z,noexecstack -fPIC -fuse-ld=gold -Wl,--disable-new-dtags -m32 --sysroot=/build/x86-alex -L/build/x86-alex/lib -Wl,-rpath-link=/build/x86-alex/lib -L/build/x86-alex/usr/lib -Wl,-rpath-link=/build/x86-alex/usr/lib -L/build/x86-alex/usr/local/lib -Wl,-rpath-link=/build/x86-alex/usr/local/lib -L/build/x86-alex/usr/i686-pc-linux-gnu/lib -Wl,-rpath-link=/build/x86-alex/usr/i686-pc-linux-gnu/lib -Wl,--icf=all -Wl,-O1 -Wl,--as-needed -Wl,--gc-sections -o lib/libdisplay_compositor.so -Wl,-soname=libdisplay_compositor.so @lib/libdisplay_compositor.so.rsp && { readelf -d lib/libdisplay_compositor.so | grep SONAME ; nm -gD -f p lib/libdisplay_compositor.so | cut -f1-2 -d' '; } > lib/libdisplay_compositor.so.tmp && if ! cmp -s lib/libdisplay_compositor.so.tmp lib/libdisplay_compositor.so.TOC; then mv lib/libdisplay_compositor.so.tmp lib/libdisplay_compositor.so.TOC ; fi; fi
chromeos-chrome-52.0.2724.0_alpha-r1: /usr/lib/gcc/i686-pc-linux-gnu/4.9.x/include/g++-v4/bits/stl_construct.h:75: error: undefined reference to 'ui::OverlayCandidatesOzone::OverlaySurfaceCandidate::OverlaySurfaceCandidate()'
chromeos-chrome-52.0.2724.0_alpha-r1: /usr/lib/gcc/i686-pc-linux-gnu/4.9.x/include/g++-v4/bits/stl_construct.h:75: error: undefined reference to 'ui::OverlayCandidatesOzone::OverlaySurfaceCandidate::OverlaySurfaceCandidate(ui::OverlayCandidatesOzone::OverlaySurfaceCandidate const&)'
chromeos-chrome-52.0.2724.0_alpha-r1: /usr/lib/gcc/i686-pc-linux-gnu/4.9.x/include/g++-v4/bits/stl_construct.h:75: error: undefined reference to 'ui::OverlayCandidatesOzone::OverlaySurfaceCandidate::OverlaySurfaceCandidate()'
chromeos-chrome-52.0.2724.0_alpha-r1: /usr/lib/gcc/i686-pc-linux-gnu/4.9.x/include/g++-v4/bits/stl_construct.h:93: error: undefined reference to 'ui::OverlayCandidatesOzone::OverlaySurfaceCandidate::~OverlaySurfaceCandidate()'
chromeos-chrome-52.0.2724.0_alpha-r1: /usr/lib/gcc/i686-pc-linux-gnu/4.9.x/include/g++-v4/bits/stl_construct.h:93: error: undefined reference to 'ui::OverlayCandidatesOzone::OverlaySurfaceCandidate::~OverlaySurfaceCandidate()'
chromeos-chrome-52.0.2724.0_alpha-r1: collect2: error: ld returned 1 exit status

Suspecting: https://codereview.chromium.org/1931213002

Sadrul, can you please take a look? Thanks!