52858 Do not throw when trying to discover a fuchsia device and the sshConfig is invalid (cla: yes, platform-fuchsia, tool, waiting for tree to go green)

52860 Show Xcode workspace clean output with verbose flag (cla: yes, t: xcode, tool)

52861 fix KeySet.hashCode; enable multiple web tests (a: accessibility, a: tests, cla: yes, f: material design, framework, severe: API break, team, will affect goldens)

52865 Roll engine bb6c9a343d92..216c420a2c06 (1 commits) (cla: yes, waiting for tree to go green)

52870 Fix package name (cla: yes, team, waiting for tree to go green)

52879 Allow recent Dart language features (cla: yes, tool)