Fix log spew for "_comment..." policies.

components/policy/core/browser/configuration_policy_handler_list.h

Index: components/policy/core/browser/configuration_policy_handler_list.h
diff --git a/components/policy/core/browser/configuration_policy_handler_list.h b/components/policy/core/browser/configuration_policy_handler_list.h
index a130e6fc50077bedd132f3fa31a1372a849ba134..933dfbe4f9947acec81839edc2df81f98e4b2c7a 100644
--- a/components/policy/core/browser/configuration_policy_handler_list.h
+++ b/components/policy/core/browser/configuration_policy_handler_list.h
@@ -11,6 +11,7 @@
 #include "base/callback.h"
 #include "base/macros.h"
 #include "components/policy/core/common/policy_details.h"
+#include "components/policy/core/common/policy_map.h"
 #include "components/policy/policy_export.h"
 
 class PrefValueMap;
@@ -20,13 +21,12 @@ namespace policy {
 class ConfigurationPolicyHandler;
 class PolicyErrorMap;
 struct PolicyHandlerParameters;
-class PolicyMap;
 struct PolicyToPreferenceMapEntry;
 class Schema;
 
 // Converts policies to their corresponding preferences by applying a list of
-// ConfigurationPolicyHandler objects. This includes error checking and
-// cleaning up policy values for displaying.
+// ConfigurationPolicyHandler objects. This includes error checking and cleaning
+// up policy values for display.
 class POLICY_EXPORT ConfigurationPolicyHandlerList {
  public:
   typedef base::Callback<void(PolicyHandlerParameters*)>
@@ -40,9 +40,9 @@ class POLICY_EXPORT ConfigurationPolicyHandlerList {
   // Adds a policy handler to the list.
   void AddHandler(std::unique_ptr<ConfigurationPolicyHandler> handler);
 
-  // Translates |policies| to their corresponding preferences in |prefs|.
-  // Any errors found while processing the policies are stored in |errors|.
-  // |prefs| or |errors| can be NULL, and won't be filled in that case.
+  // Translates |policies| to their corresponding preferences in |prefs|.  Any
+  // errors found while processing the policies are stored in |errors|.  |prefs|
+  // or |errors| can be nullptr, and won't be filled in that case.
   void ApplyPolicySettings(const PolicyMap& policies,
                            PrefValueMap* prefs,
                            PolicyErrorMap* errors) const;
@@ -51,6 +51,8 @@ class POLICY_EXPORT ConfigurationPolicyHandlerList {
   void PrepareForDisplaying(PolicyMap* policies) const;
 
  private:
+  bool IsPlatformDevicePolicy(const PolicyMap::const_iterator iter) const;
+
   std::vector<ConfigurationPolicyHandler*> handlers_;
   const PopulatePolicyHandlerParametersCallback parameters_callback_;
   const GetChromePolicyDetailsCallback details_callback_;