Merge pull request #21759 from etiennesegonzac/bug-1034985

Bug 1034985 - Prevent switch notification to show up for inactive preloaded attention screens r=21
Merge pull request #21925 from past/keyboard-bug-1040012

Bug 1040012 - Long press on period key in the Greek keyboard should show...
Merge pull request #20546 from gitmai/bug-837678-CC-perf-test

Bug 837678 - [cost control] Implement new startup loading events
r=salva
Merge pull request #21459 from fcampo/fte-region-mcc-894121

Bug 894121 - Using MCC automatically selects wrong timezone (r=francisco,achen)