While removing the android gen_snapshot dependency from flutter doctor, the following tests failed:

• linux_gradle_plugin_bundle_test
• linux_gradle_plugin_fat_apk_test
• linux_module_host_with_custom_build_test
• mac_gradle_plugin_bundle_test
• mac_gradle_plugin_fat_apk_test
• mac_gradle_plugin_light_apk_test
• mac_module_host_with_custom_build_test
• win_gradle_plugin_bundle_test
• win_gradle_plugin_fat_apk_test
• win_gradle_plugin_light_apk_test
• win_module_host_with_custom_build_test

These tests should flutter precache any dependencies they need, and not rely on other commands happening to download the right binaries.

Additionally, the tool should probably check for dependencies in assemble.