The proto definitions may be needed at build time to generate appropriate configs for the modules. Unbundled ART branches do not include packages/modules/SdkExtenstion in their manifest; so put the proto in a project that should be visible to all unbundled modules. Move any relevant tools to packages/modules/common/tools as well. Bug: 180105615 Test: m nothing Change-Id: I4efa4300553af6b321f46adb29b8cc90e4556955