51527 [flutter_tools] Adds logging for integration test to make it easier to diagnose failures (cla: yes, tool)

51532 Clean App.framework, Generated.xcconfig, flutter_export_environment.sh (cla: yes, tool)

51533 [flutter_tools] update chrome tests to remove globals, mock processmanager, mock platform (cla: yes, tool)

51539 Revert “[flutter_tool] Where possible, catch only subtypes of Exception” (cla: yes, tool)

51567 Reland: [flutter_tool] Where possible, catch only subtypes of Exception (cla: yes, tool)

51569 [fuchsia] Update the SDK version to match engine (cla: yes, waiting for tree to go green)