Rename the iVars in confirm_infobar_view.mm to match the style guide.

It's a follow-up to https://chromium-review.googlesource.com/c/chromium/src/+/1270922

Bug: 890336
Cq-Include-Trybots: luci.chromium.try:ios-simulator-cronet;luci.chromium.try:ios-simulator-full-configs
Change-Id: Iea3b7be1d588cdcdbdded5409927e18c069812b4
Reviewed-on: https://chromium-review.googlesource.com/c/1277287
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Vasilii Sukhanov <vasilii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599156}
1 file changed