Add support for iOS to libjpeg.gyp.

iOS will start pulling libjpeg_turbo in
https://codereview.chromium.org/376573003/ as part of enabling initial Mojo
support on iOS. To do so, iOS needs the same dependency from libjpeg_turbo to
yasm as Mac does; otherwise, GYP chokes in processing libjpeg.gyp due to
yasm_path being undefined.

R=noel@chromium.org, rmcilroy@chromium.org

Review URL: https://codereview.chromium.org//444883002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@288018 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed