Preference provider implementation backed by JSON files in a directory.

chrome/browser/configuration_policy_provider.h

Index: chrome/browser/configuration_policy_provider.h
diff --git a/chrome/browser/configuration_policy_provider.h b/chrome/browser/configuration_policy_provider.h
index cae73f6f5b5e2c49fee021f5e5f7dd056afc7fe6..daf5cb494ab7bd21ff78790aae5dad6c3f091ab8 100644
--- a/chrome/browser/configuration_policy_provider.h
+++ b/chrome/browser/configuration_policy_provider.h
@@ -5,21 +5,24 @@
 #ifndef CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_
 #define CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_
 
+#include "base/basictypes.h"
+
 class ConfigurationPolicyStore;
+class DictionaryValue;
 
 // An abstract super class for platform-specific policy providers.
 // Platform-specific policy providers (Windows Group Policy, gconf,
 // etc.) should implement a subclass of this class.
 class ConfigurationPolicyProvider {
  public:
-  ConfigurationPolicyProvider();
+  ConfigurationPolicyProvider() {}
   virtual ~ConfigurationPolicyProvider() {}
 
   // Must be implemented by provider subclasses to specify the
   // provider-specific policy decisions. The preference service
   // invokes this |Provide| method when it needs a policy
   // provider to specify its policy choices. In |Provide|,
-  // the |ConfigurationPolicyProvider| must make calls to the
+  // the ConfigurationPolicyProvider must make calls to the
   // |Apply| method of |store| to apply specific policies.
   // Returns true if the policy could be provided, otherwise false.
   virtual bool Provide(ConfigurationPolicyStore* store) = 0;
@@ -28,5 +31,10 @@ class ConfigurationPolicyProvider {
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProvider);
 };
 
-#endif  // CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_
+// Base functionality for all policy providers that use a DictionaryValue tree
+// structure holding key-value pairs for storing policy settings. Decodes the
+// value tree and writes the configuration to the given |store|.
+void DecodePolicyValueTree(DictionaryValue* policies,
+                           ConfigurationPolicyStore* store);
 
+#endif  // CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_