49377 [flutter_tools] Apply –no-causal-async-stacks and –lazy-async-stacks to profile/release builds (cla: yes, tool, waiting for tree to go green)

49379 Script to generate missing localization resources (cla: yes, f: material design, framework, team)

49380 [flutter_tool] Don’t crash on a failure to write to std{out,err} (cla: yes, tool, waiting for tree to go green)

49389 Defer image decoding when scrolling fast (a: images, cla: yes, f: scrolling, framework, severe: API break, waiting for tree to go green)

49391 Text Selection Overflow (Android) (a: text input, cla: yes, f: material design, framework, severe: API break, will affect goldens)