57274 Desktop default window size (cla: yes, tool, waiting for tree to go green)

57321 Update packages (cla: yes, team, tool, waiting for tree to go green)

57328 Update flutter_gallery_assets to ^0.2.0 (cla: yes, team, tool)

57345 Protect the deletion of the local engine temp dir in case it is alrea… (cla: yes, tool, waiting for tree to go green)

57349 Device manager choose running device (cla: yes, tool, waiting for tree to go green)

57355 [flutter tools] Improve messages when we fail to connect to the Observatory (cla: yes, tool, waiting for tree to go green)

57392 [flutter_tools] check for Runner.sln when parsing for plugins (cla: yes, tool)