Masayuki Nakano 5d36739f8b Bug 1660378 - part 1: Get rid of CSSEditUtils::GetInlineStyles() r=m_kato
It should take `nsStyledElement&` instead of `const Element&`.  Then, it won't
fail and will just return the result of `nsStyleElement::Style()`.  Therefore,
we can get rid of it.

Note that this patch makes all its callers keep using strong pointer because
I'm not sure whether the layout APIs which are called with them are safe or
not.

Differential Revision: https://phabricator.services.mozilla.com/D87982
2020-08-26 04:48:12 +00:00
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