The following gn args:

dcheck_always_on = true
is_component_build = true
is_debug = true
is_clang = true
target_os = "android"
disable_incremental_isolated_processes = true
enable_incremental_javac = true
symbol_level = 1
run_findbugs = false
incremental_apk_by_default = false
emma_coverage = true                                                                                                 
emma_filter = "org.chromium.chrome.browser.*"

Result in the following error from gn:

Generating files...
ERROR at //build/config/android/rules.gni:1837:9: Undefined identifier.
        possible_config_deps +=
        ^-------------------
See //testing/android/empty_apk/empty_apk.gni:17:3: whence it was called.
  android_apk(target_name) {
  ^-------------------------
See //third_party/catapult/devil/BUILD.gn:7:1: whence it was called.
empty_apk("empty_system_webview_apk") {
^--------------------------------------
See //BUILD.gn:292:7: which caused the file to be included.
      "//third_party/catapult/devil",
      ^-----------------------------