34516 [flutter_tool] Fill in Fuchsia version string (cla: yes, tool)

34517 pass .packages path to snapshot invocation (cla: yes, tool)

34519 fix page scroll position rounding error (cla: yes, framework, severe: customer critical)

34521 redux of a change to use new engine APIs for Flutter.Frame events (cla: yes)

34526 retry on HttpException during cache download (cla: yes, tool)

34527 Don’t crash on invalid .packages file (cla: yes, tool)

34529 Remove compilation trace and dynamic support code (cla: yes, tool)

34530 Reland “redux of a change to use new engine APIs for Flutter.Frame events” (cla: yes)