50806 unnecessary multiline strings (cla: yes, team, tool, waiting for tree to go green)

50812 Manually roll engine to d60f298d9e7755b8f8204646e7ff03a846f5436c (cla: yes, engine)

50818 [version] Update to the latest test package (cla: yes, team, waiting for tree to go green)

50822 check for fuchsia (cla: yes)

50823 [flutter_tools] move dwds imports to not require g3 visibility (cla: yes, tool, waiting for tree to go green)

50825 start multiline strings with newline (a: tests, cla: yes, d: examples, framework, team, team: gallery, tool, waiting for tree to go green)