Add source column to chrome://policy showing the origins of policies.

components/policy/core/common/policy_statistics_collector_unittest.cc

Index: components/policy/core/common/policy_statistics_collector_unittest.cc
diff --git a/components/policy/core/common/policy_statistics_collector_unittest.cc b/components/policy/core/common/policy_statistics_collector_unittest.cc
index 984f63bf4eb24765ab95197f09d5aad6061a0d25..6d5a0c2e8f4a6e7526131f0ece7c1de18171f703 100644
--- a/components/policy/core/common/policy_statistics_collector_unittest.cc
+++ b/components/policy/core/common/policy_statistics_collector_unittest.cc
@@ -109,6 +109,7 @@ class PolicyStatisticsCollectorTest : public testing::Test {
     policy_map_.Set(name,
                     POLICY_LEVEL_MANDATORY,
                     POLICY_SCOPE_USER,
+                    POLICY_SOURCE_CLOUD,
                     new base::FundamentalValue(true),
                     NULL);
   }