Bug 1720733 R[Core:DOM: Navigation]Try to ensure SessionHistoryEntry::mFrameLoader isn't replaced accidentally
Bug 1710934 R[Core:Widget: Cocoa]Hard-to-read URL bar text when using a theme with brighttext toolbar and darktext URL bar
Bug 1720534 R[Firefox:Theme]Clean up styles in the Bookmarks Menu Button menupopups on Windows 7 and 10
Bug 1720820 R[Firefox Build System:Toolchains]Remove python executable configuration from clang build script
###########
Changes to 4 bugs - 4 fixed.