Move policy code into components/policy.

chrome/browser/policy/configuration_policy_handler_unittest.cc

Index: chrome/browser/policy/configuration_policy_handler_unittest.cc
diff --git a/chrome/browser/policy/configuration_policy_handler_unittest.cc b/chrome/browser/policy/configuration_policy_handler_unittest.cc
index d648f12af2b2d727ca9b9f7a72a14d2a5f65841b..42277f35df29dbb60c9277985da3e6e8dd445731 100644
--- a/chrome/browser/policy/configuration_policy_handler_unittest.cc
+++ b/chrome/browser/policy/configuration_policy_handler_unittest.cc
@@ -5,11 +5,16 @@
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_value_map.h"
-#include "chrome/browser/policy/configuration_policy_handler.h"
+#include "components/policy/core/browser/configuration_policy_handler.h"
 #include "components/policy/core/browser/policy_error_map.h"
 #include "components/policy/core/common/policy_map.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+// Note: this file should move to components/policy/core/browser, but the
+// components_unittests runner does not load the ResourceBundle as
+// ChromeTestSuite::Initialize does, which leads to failures using
+// PolicyErrorMap.
+
 namespace policy {
 
 namespace {