tree 21cccd13dab67aa73a0f0bdfbbd3bd594c1f3721
parent bd63a31aabd06325c0894f18edc1b4e4b076d347
author James Zern <jzern@google.com> 1479525553 -0800
committer James Zern <jzern@google.com> 1481164486 -0800

Android.mk: use -fvisibility=hidden

brings the final libwebp.so size down 16/20K with arm64/armv7 builds
using ndk-r13

Change-Id: I20d8aba61d6b692b0fc32f4b271e2f9872f03c28
(cherry picked from commit de568abfdbc15a2953efc764cb0dab51b6466a52)