Use cefode's CEF binary.

Rakefile

@@ -20,7 +20,9 @@ end
 
 desc "Update CEF to the latest version specified by the prebuilt-cef submodule"
 task "update-cef" => "bootstrap" do
-  exit 1 unless system %{prebuilt-cef/script/download -f cef}
+  # TODO Use prebuilt-cef's script after https://github.com/github/prebuilt-cef/pull/2 is merged.
+  # exit 1 unless system %{prebuilt-cef/script/download -b 1410 -r 1107 -d https://gh-contractor-zcbenz.s3.amazonaws.com/cefode/prebuilt-cef -f cef}
+  exit 1 unless system %{script/download_cef -b 1410 -r 1107 -d https://gh-contractor-zcbenz.s3.amazonaws.com/cefode/prebuilt-cef -f cef}
   Dir.glob('cef/*.gypi').each do |filename|
     `sed -i '' -e "s/'include\\//'cef\\/include\\//" -e "s/'libcef_dll\\//'cef\\/libcef_dll\\//" #{filename}`
   end
@@ -28,7 +30,9 @@ end
 
 desc "Download debug symbols for CEF"
 task "download-cef-symbols" => "update-cef" do
-  sh %{prebuilt-cef/script/download -s cef}
+  # TODO Use prebuilt-cef's script after https://github.com/github/prebuilt-cef/pull/2 is merged.
+  # sh %{prebuilt-cef/script/download -b 1410 -r 1107 -d https://gh-contractor-zcbenz.s3.amazonaws.com/cefode/prebuilt-cef -s cef}
+  sh %{script/download_cef -b 1410 -r 1107 -d https://gh-contractor-zcbenz.s3.amazonaws.com/cefode/prebuilt-cef -s cef}
 end
 
 task "bootstrap" do

script/download_cef

@@ -0,0 +1,91 @@
+#!/bin/sh
+#/ Usage: download [-f] [-s] [-b cef-branch] [-r cef-revision] [-d url/to/prebuilt/cef] path/for/extraction
+#/ Download and extract prebuilt CEF.
+#/
+#/ Options:
+#/   -f            Overwrite path/for/extraction if it already exists.
+#/   -s            Download debugging symbols as well.
+#/   -b            CEF branch.
+#/   -r            CEF revision.
+#/   -d            Where to download binaries.
+#/   -h            Show this message.
+
+set -e
+
+usage() {
+  grep '^#/' <"$0"| cut -c4-
+}
+
+DISTURL="https://github-janky-artifacts.s3.amazonaws.com/prebuilt-cef"
+
+while getopts ":fsb:r:d:h" OPTION; do
+  case ${OPTION} in
+    f)
+      FORCE=1
+      ;;
+    s)
+      SYMBOLS=1
+      ;;
+    b)
+      CEF_BRANCH=${OPTARG}
+      ;;
+    r)
+      CEF_REVISION=${OPTARG}
+      ;;
+    d)
+      DISTURL=${OPTARG}
+      ;;
+    h)
+      usage
+      exit 0
+      ;;
+    ?)
+      echo "Unknown option -${OPTARG}"
+      usage
+      exit 1
+      ;;
+  esac
+done
+
+shift $((OPTIND-1))
+
+if [ -z "${1}" ]; then
+  usage
+  exit 1
+fi
+
+if [ "$(uname)" = "Darwin" ]; then
+  OS_TYPE=macosx
+else
+  OS_TYPE=linux
+fi
+CEF_BASENAME="cef_binary_3.${CEF_BRANCH}.${CEF_REVISION}_${OS_TYPE}"
+CEF_SYMBOLS_BASENAME="${CEF_BASENAME}_symbols"
+
+TEMP_DIR=$(mktemp -d -t prebuilt-cef-download.XXXXXX)
+trap "rm -rf \"${TEMP_DIR}\"" EXIT
+
+# See if we've already downloaded this version.
+grep -E "^CEF Version:[[:space:]]+3\.${CEF_BRANCH}\.${CEF_REVISION}$" "${1}/README.txt" >/dev/null 2>&1 || {
+  if [ -e "${1}" ] && [ "${FORCE}" != "1" ]; then
+    echo >&2 "Error: ${1} already exists. Pass -f if you want to overwrite it."
+    exit 1
+  fi
+
+  rm -rf "${1}"
+  mkdir -p "${1}"
+
+  echo "Downloading/extracting CEF3 branch ${CEF_BRANCH} r${CEF_REVISION}..."
+  curl --progress-bar "${DISTURL}/${CEF_BASENAME}.zip" > "${TEMP_DIR}/cef.zip"
+  unzip -q "${TEMP_DIR}/cef.zip" -d "${TEMP_DIR}"
+  mv "${TEMP_DIR}/${CEF_BASENAME}"/* "${1}"
+}
+
+if [ "${SYMBOLS}" != "1" ]; then
+  exit 0
+fi
+
+echo "Downloading/extracting symbols for CEF3 branch ${CEF_BRANCH} r${CEF_REVISION}..."
+curl --progress-bar "${DISTURL}/${CEF_SYMBOLS_BASENAME}.zip" > "${TEMP_DIR}/symbols.zip"
+unzip -q "${TEMP_DIR}/symbols.zip" -d "${TEMP_DIR}"
+mv "${TEMP_DIR}/${CEF_SYMBOLS_BASENAME}"/* "${1}/Release"