Use bundle_data and create_bundle to add support for iOS app bundle.

Cherry-pick 0c9a78092 to m49 branch.

Original CL: https://codereview.chromium.org/1755473004/

BUG=297668
TBR=dpranke@chromium.org,sdefresne

Review URL: https://codereview.chromium.org/1785033005 .