[Android] Add base_junit_tests to the Android user build FYI bot.

build/android/buildbot/bb_device_steps.py

Index: build/android/buildbot/bb_device_steps.py
diff --git a/build/android/buildbot/bb_device_steps.py b/build/android/buildbot/bb_device_steps.py
index d7975a398a24c6cbe810f8f30e8c16c4b13d289b..82765f744109c52ad305dab7ef0e55fd4ff29af7 100755
--- a/build/android/buildbot/bb_device_steps.py
+++ b/build/android/buildbot/bb_device_steps.py
@@ -178,6 +178,10 @@ def RunTestSuites(options, suites, suites_options=None):
     _RunTest(options, cmd, suite)
 
 
+def RunJunitSuite(suite):
+  RunCmd(['build/android/test_runner.py', 'junit', '-s', suite])
+
+
 def RunChromeDriverTests(options):
   """Run all the steps for running chromedriver tests."""
   bb_annotations.PrintNamedStep('chromedriver_annotation')
@@ -561,6 +565,8 @@ def RunPythonUnitTests(_options):
 
 def GetTestStepCmds():
   return [
+      ('base_junit_tests',
+          lambda _options: RunJunitSuite('base_junit_tests')),
       ('chromedriver', RunChromeDriverTests),
       ('chrome_proxy', RunChromeProxyTests),
       ('components_browsertests',