The above profile was generated with these build settings:

target_os = "android"
target_cpu = "arm"
is_debug = false
is_component_build = true
symbol_level = 1
enable_incremental_javac = true
incremental_apk_by_default = true
is_java_debug = true
dcheck_always_on = false
use_goma = true
disable_incremental_isolated_processes=true
is_official_build = false
is_chrome_branded = false

on a Nexus 9.

We've gotten this down to where it's launchable. Future improvements will likely come from either 1) making Mojo have less overhead in general or 2) make Chrome startup more asynchronous so the service can be started asynchronously with other startup activities.