As follow-on work to  issue 740112 , we need to complete a small refactor to the naming of URL formatter constants.  See details in that issue.

Summary of the required rework from tommycli@ (paraphrased):

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 1. Rename the "strip https scheme" option to remove "experimental" from the name.

 2. Figure out what kFormatUrlOmitAll now means. I suspect it really means "default" or "sane defaults" and should be renamed kFormatUrlOmitDefaults or something. This may take a bit of investigation into the callsites.

 3. Re-jigger the comments to make clear that the flags within the default set don't include the experimental ones and the HTTPS trimming.
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We deferred this work from M-61 to M-62 to minimize the code change merged to the M-61 branch.  This bug tracks the additional work required to make the change properly.