Recipe changes to move webview perf bots to the android/perf recipe

scripts/slave/recipes/android/builder.py

Index: scripts/slave/recipes/android/builder.py
diff --git a/scripts/slave/recipes/android/builder.py b/scripts/slave/recipes/android/builder.py
index a29fa30561a1917be4de3723d1da0aca94ce93e8..facdbaf835a1709ae6c51cca9b6aaf61bbd35777 100644
--- a/scripts/slave/recipes/android/builder.py
+++ b/scripts/slave/recipes/android/builder.py
@@ -15,6 +15,7 @@ DEPS = [
   'recipe_engine/properties',
   'recipe_engine/step',
   'depot_tools/tryserver',
+  'trigger',
 ]
 
 @contextmanager
@@ -64,6 +65,20 @@ BUILDERS = freeze({
         'system_webview_apk',
         'system_webview_shell_apk',
       ],
+      'triggers': [
+        {
+          'buildername': 'WebView Nexus5 Perf (1)',
+          'mastername': 'chromium.perf.fyi',
+        },
+        {
+          'buildername': 'WebView Nexus5X Perf (1)',
+          'mastername': 'chromium.perf.fyi',
+        },
+        {
+          'buildername': 'WebView Nexus5X Perf (2)',
+          'mastername': 'chromium.perf.fyi',
+        }
+      ]
     },
     'Android arm64 Builder': {
       'recipe_config': 'arm64_builder_rel_mb',
@@ -199,6 +214,12 @@ def _RunStepsInternal(api, mastername, buildername, revision):
   if upload_config:
     droid.zip_and_upload_build(upload_config['bucket'])
 
+  # TODO(mikecase): Remove this logic once WebView bots are on chromium.perf
+  if bot_config.get('triggers'):
+    api.trigger(*[{'mastername': b['mastername'],

[bpastene, 2016/04/14 18:55:29]

I believe you'll want to add the tag {'bucket': b['mastername']} to this list.
This is how it knows to trigger on another master, otherwise it defaults to the
current master. Also, the value has to be prefixed with 'master.'

[mikecase (-- gone --), 2016/04/15 21:23:17]

Done. Added 

'bucket': b['mastername'], 

to the list.

It seems like "master." is automagically prepended. When I add "master." I got
something like..
+          "bucket": "master.master.chromium.perf.fyi",
in my expectation files.

+                   'buildername': b['buildername'],
+                   'revision': api.properties['revision']}
+                  for b in bot_config['triggers']])
 
 def RunSteps(api, mastername, buildername, revision):
   with api.tryserver.set_failure_hash():