This adds in missing functionality, such as deactivating
the surface selection while the dialog is open.
Change-Id: I0d8652a989504a35e5c235224b0ef924b6dcbeed
Throw a dialog box up to ask whether to convert something with formatting to
wikitext, or downconvert it to plain text.
This logically depends on Ie9aaaa59e9dfa138d394051fe491573253df1805.
Bug: T190079
Change-Id: I6afbbe303d1506426109e75c95f6be546ec48536
Depends-On: Ie9aaaa59e9dfa138d394051fe491573253df1805
Equivalent to some existing copy-code in inspectors which handle raw wikitext.
Lets us shortcut content-sniffing with html/text content onPaste.
Change-Id: I27ded82a9675abdb3ee98ee29390e7079d11cf05
Remove config option `multiline` and change to MultilineTextInputWidget as
appropriate.
Bug: T169272
Change-Id: I45565f01de76a88d64d7b0691d1e7279354f375d