Added git-hash-metrics builder and recipe

masters/master.chromium.infra.cron/master.cfg

Index: masters/master.chromium.infra.cron/master.cfg
diff --git a/masters/master.chromium.infra.cron/master.cfg b/masters/master.chromium.infra.cron/master.cfg
index 499946792eafd7f963c48a5ab368dc27ca3d3f91..cc911dcb65e95a8734d4dd4735fbffac47300282 100644
--- a/masters/master.chromium.infra.cron/master.cfg
+++ b/masters/master.chromium.infra.cron/master.cfg
@@ -39,6 +39,18 @@ f_annotations = annotator_factory.AnnotatorFactory(ActiveMaster)
 
 config.DatabaseSetup(c, require_dbconfig=ActiveMaster.is_production_host)
 
+
+####### CHANGE SOURCES
+
+c['change_source'].extend([
+  gitiles_poller.GitilesPoller(
+    repo_url='https://chromium.googlesource.com/infra/infra',
+    project='infra',
+    branches=['master'],
+    pollInterval=10,
+    revlinktmpl=INFRA_REPO_URL+'/+/%s'),
+])
+
 ####### BUILDERS
 
 c['builders'].extend([
@@ -153,6 +165,11 @@ c['builders'].extend([
     'factory': f_annotations.BaseFactory(recipe='chromium_codesearch'),
     'category': '2codesearch',
   },
+  {
+    'name': 'git-hash-metrics',
+    'factory': f_annotations.BaseFactory(recipe='git_hash_metric'),
+    'category': '3monitoring',
+  },
 ])
 
 ####### SCHEDULERS
@@ -197,6 +214,11 @@ c['schedulers'].extend([
       hour=range(0, 24, 4),
       minute=0,
       builderNames=['Chromium Linux Codesearch', 'ChromiumOS Codesearch']),
+
+  # Trigger this builder on any change anywhere.
+  AnyBranchScheduler(
+      name='git-hash-metrics',
+      builderNames=['git-hash-metrics']),
 ])
 
 ####### BUILDSLAVES