This flag is aiming at shipping the ability to generate optimized code
directly from bytecode (without re-parsing source code). All features
needed to ship such a configuration will be staged behind this flag.

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

Review-Url: https://codereview.chromium.org/2174333002
Cr-Commit-Position: refs/heads/master@{#38040}