libyuv: Add Android Testers

masters/master.client.libyuv/master_android_cfg.py

Index: masters/master.client.libyuv/master_android_cfg.py
diff --git a/masters/master.client.libyuv/master_android_cfg.py b/masters/master.client.libyuv/master_android_cfg.py
index c78c570670d80a5edbb48ed91688df709c83383a..977df41c0c1172888a4389eba4da857492092f50 100644
--- a/masters/master.client.libyuv/master_android_cfg.py
+++ b/masters/master.client.libyuv/master_android_cfg.py
@@ -36,6 +36,18 @@ def Update(c):
     {'name': 'Android32 x86 Debug', 'slavebuilddir': 'android_x86'},
     {'name': 'Android64 x64 Debug', 'slavebuilddir': 'android_x64'},
     {'name': 'Android32 MIPS Debug', 'slavebuilddir': 'android_mips'},
+    {
+      'name': 'Android Tester ARM32 Debug (Nexus 5X)',
+      'slavebuilddir': 'android_arm32',
+    },
+    {
+      'name': 'Android Tester ARM32 Release (Nexus 5X)',
+      'slavebuilddir': 'android_arm32',
+    },
+    {
+      'name': 'Android Tester ARM64 Debug (Nexus 5X)',
+      'slavebuilddir': 'android_arm64',
+    },
   ]
 
   c['builders'].extend([