Update Android trybots in the default try job list.

This updates the default set of trybots that are used
when no bot names are specified when submitting a try job.

TBR=andrew@webrtc.org
TEST=Ran git try -t compile and verified it was sent to all bots.
BUG=none

Review URL: https://webrtc-codereview.appspot.com/6289004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5329 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index b7df908..33d9be2 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -158,6 +158,11 @@
 def GetPreferredTrySlaves(project, change):
   files = change.LocalPaths()
 
+  android_bots = [
+      'android',
+      'android_rel',
+      'android_clang',
+  ]
   ios_bots = [
       'ios',
       'ios_rel',
@@ -191,4 +196,4 @@
   if all(re.search('(^|[/_])win[/_.]', f) for f in files):
     return win_bots
 
-  return ['android_ndk'] + ios_bots + linux_bots + mac_bots + win_bots
+  return android_bots + ios_bots + linux_bots + mac_bots + win_bots