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

components/policy/core/common/policy_loader_mac_unittest.cc

Index: components/policy/core/common/policy_loader_mac_unittest.cc
diff --git a/components/policy/core/common/policy_loader_mac_unittest.cc b/components/policy/core/common/policy_loader_mac_unittest.cc
index ec18d311805c09ba468688d0dd664d0649bfd5bc..2e53903d05a43cc3ea355a89a9cde06dac6ce409 100644
--- a/components/policy/core/common/policy_loader_mac_unittest.cc
+++ b/components/policy/core/common/policy_loader_mac_unittest.cc
@@ -59,7 +59,8 @@ class TestHarness : public PolicyProviderTestHarness {
 };
 
 TestHarness::TestHarness()
-    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER) {}
+    : PolicyProviderTestHarness(POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
+                                POLICY_SOURCE_PLATFORM) {}
 
 TestHarness::~TestHarness() {}
 
@@ -187,11 +188,12 @@ TEST_F(PolicyLoaderMacTest, TestNonForcedValue) {
   loop_.RunUntilIdle();
   PolicyBundle expected_bundle;
   expected_bundle.Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()))
-      .Set(test_keys::kKeyString,
-           POLICY_LEVEL_RECOMMENDED,
-           POLICY_SCOPE_USER,
-           new base::StringValue("string value"),
-           NULL);
+      .SetWithSource(test_keys::kKeyString,
+                     POLICY_LEVEL_RECOMMENDED,
+                     POLICY_SCOPE_USER,
+                     new base::StringValue("string value"),
+                     NULL,
+                     POLICY_SOURCE_PLATFORM);
   EXPECT_TRUE(provider_->policies().Equals(expected_bundle));
 }