policy: Add ostream operator overloads to policy types for testing.

chrome/browser/policy/test_utils.h

Index: chrome/browser/policy/test_utils.h
diff --git a/chrome/browser/policy/test_utils.h b/chrome/browser/policy/test_utils.h
index bdb278316a1ce8f59f818226ae79a48a193297d8..c1281238aed80d97bdb06b7c2ab4ff248bf51bee 100644
--- a/chrome/browser/policy/test_utils.h
+++ b/chrome/browser/policy/test_utils.h
@@ -5,9 +5,15 @@
 #ifndef CHROME_BROWSER_POLICY_TEST_UTILS_H_
 #define CHROME_BROWSER_POLICY_TEST_UTILS_H_
 
+#include <ostream>
+
+#include "chrome/browser/policy/policy_map.h"
+#include "chrome/browser/policy/policy_service.h"
+
 namespace policy {
 
-class PolicyService;
+class PolicyBundle;
+struct PolicyNamespace;
 
 // Returns true if |service| is not serving any policies. Otherwise logs the
 // current policies and returns false.
@@ -15,4 +21,10 @@ bool PolicyServiceIsEmpty(const PolicyService* service);
 
 }  // namespace policy
 
+std::ostream& operator<<(std::ostream& os, const policy::PolicyBundle& bundle);
+std::ostream& operator<<(std::ostream& os, policy::PolicyDomain domain);
+std::ostream& operator<<(std::ostream& os, const policy::PolicyMap& policies);
+std::ostream& operator<<(std::ostream& os, const policy::PolicyMap::Entry& e);
+std::ostream& operator<<(std::ostream& os, const policy::PolicyNamespace& ns);
+
 #endif  // CHROME_BROWSER_POLICY_TEST_UTILS_H_