Bug 1055596 - Make sure that stackwalk binary is installed when running web-platform-tests, r=jgriffin
Bug 1055596 - Make sure that stackwalk binary is installed when running web-platform-tests, r=jgriffin

--HG--
extra : rebase_source : efa57f0e306b4ff124faf1693bbaef89352969fe

simar7/build-mozharness,simar7/build-mozharness,mrrrgn/build-mozharness,lissyx/build-mozharness,kartikgupta0909/build-mozharness,walac/build-mozharness,mrrrgn/build-mozharness,walac/build-mozharness,kartikgupta0909/mozilla-mozharness,kartikgupta0909/build-mozharness,armenzg/build-mozharness,mozilla/build-mozharness,armenzg/build-mozharness,kartikgupta0909/gittest,lissyx/build-mozharness,kartikgupta0909/mozilla-mozharness,mozilla/build-mozharness,kartikgupta0909/gittest