12777 Fix Metal builds.

12780 Restart all modern Samsung keyboard IMM

12783 Add a unit-test to verify that root surface transformation affects platform view coordinates.

12785 Fix bug in package script and add dev_compiler to list

12793 Fixing selection issues in Firefox

12797 add option for bulk-updating screenshots; update screenshots (Work in progress

12798 [flutter_runner] Update the cmx files to include TZ support

12799 Disable EmbedderTest::CanLaunchAndShutdownMultipleTimes.

12800 Prettify all CMX files

12801 do not wrap font family name