message: Move comment to top of command.
diff: @@ -38,13 +38,13 @@ if [[ "$ubuntu_version" == "14" ]]; then
  apt-get dist-upgrade -y
  fi
  +## TODO(yifeif) remove ffmpeg once ffmpeg is removed from contrib
  apt-get install -y --no-install-recommends \
  autoconf \
  automake \
  build-essential \
  clang-format-3.8 \
  curl \
  - ## TODO(yifeif) remove once ffmpeg is removed from contrib
  ffmpeg \
  git \
  libcurl4-openssl-dev \
  