66687 Teach the flutter tool how to find android output files if the flavor contains uppercase letters (cla: yes, tool, waiting for tree to go green)

66688 Dispose of images after using them (a: tests, cla: yes, framework, perf: memory, severe: performance)

66691 [flutter_tools] dont mention git clone of flutter in run message (cla: yes, tool)

66692 Allow modifying barrier color and barrier dismissible for Cupertino Modal Popup (cla: yes, f: cupertino, framework, waiting for tree to go green)

66693 Roll gallery to the newest version (cla: yes, team)

66694 Page-subclasses to take children instead of builder (cla: yes, f: cupertino, f: material design, framework, waiting for tree to go green)