Bug 1642221 R[Core:CSS Parsing and Computation]Rename SheetLoadData::mLoaderPrincipal to mTriggeringPrincipal.
Bug 1642167 R[Core:Printing: Setup]Refactor nsPrintJob::EnablePOsForPrinting to be understandable
Bug 1641261 R[Firefox:Search]Handle the case when an app provided engine is hidden/removed, and a WebExtension wants to select as default.
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Changes to 3 bugs - 3 fixed.
2 bugs are not included due to being restricted