Add android_webview_unittests to the FYI android bot.

build/android/buildbot/buildbot_functions.sh

Index: build/android/buildbot/buildbot_functions.sh
diff --git a/build/android/buildbot/buildbot_functions.sh b/build/android/buildbot/buildbot_functions.sh
index 73bec0ad475a1fda0f03aff050b6f1f4f211e51a..8617d91534b8a52027305dc658634481270cc90b 100755
--- a/build/android/buildbot/buildbot_functions.sh
+++ b/build/android/buildbot/buildbot_functions.sh
@@ -251,10 +251,7 @@ function bb_run_webkit_layout_tests {
 
 # Run experimental unittest bundles.
 function bb_run_experimental_unit_tests {
-  # This build step was added because bash does not allow empty functions.
-  # run_tests.py echoes a build step, comment/remove this build step when you
-  # add tests to the experimental step.
-  echo '@@@BUILD_STEP experimental_unit_tests@@@'
+  build/android/run_tests.py --xvfb --verbose -s android_webview_unittests
 }
 
 # Run findbugs.