Use logdog butler subcommand to run tests.

build/android/BUILD.gn

Index: build/android/BUILD.gn
diff --git a/build/android/BUILD.gn b/build/android/BUILD.gn
index 53366db1934f98bcbab8fdf2304c01f3e49bb67a..406f3f60a3e5caad27df094f1b41c1e543f88823 100644
--- a/build/android/BUILD.gn
+++ b/build/android/BUILD.gn
@@ -125,6 +125,16 @@ group("test_runner_py") {
          ]
 }
 
+group("logdog_wrapper_py") {
+  _py_files = read_file("test_wrapper/logdog_wrapper.pydeps", "list lines")
+
+  # Filter out comments.
+  set_sources_assignment_filter([ "#*" ])
+  sources = _py_files
+
+  data = sources
+}
+
 # Create wrapper scripts in out/bin that takes care of setting the
 # --output-directory.
 _scripts_to_wrap = [