Release Notes for v10.2.0

Fixes

Added Electron DLLs like libGLESv2.dll to symbol server. #26964 (Also in 9, 11, 12)
Fixed systemPreferences.effectiveAppearance returning systemPreferences.getAppLevelAppearance(). #26882 (Also in 9, 11, 12)
Fixed an issue that a message box in GTK contains no buttons. #26915 (Also in 11, 12)
Fixed an issue where event.reply could sometimes not deliver a reply to an IPC message when cross-site iframes were present. #26927 (Also in 9, 11, 12)
Fixed an occasional crash on Windows related to NativeViewHost::SetParentAccessible. #26949 (Also in 9, 11, 12)

Security: backport fix for 1150649. #26896
Security: backported fix for 1137603. #26892
Security: backported fix for 1141350. #26894
Security: backported the fix to CVE-2020-16014: Use after free in PPAPI. #26855
Security: backported the fix to CVE-2020-16023: Use after free in WebCodecs. #26832
Security: backported the fix to CVE-2020-16024: Heap buffer overflow in UI. #26830
Security: backported the fix to heap-buffer-overflow in gfx::internal::StyleIterator::GetTextBreakingRange. #26866