policy: load JSON schema into domain descriptor at start time.

chrome/browser/policy/configuration_policy_provider.h

Index: chrome/browser/policy/configuration_policy_provider.h
diff --git a/chrome/browser/policy/configuration_policy_provider.h b/chrome/browser/policy/configuration_policy_provider.h
index 2d7372a65d77fb1c8dfa15248c1b4bf5d8278239..79fd3cacd256735e7ea2c79b1de829a4dcbb5962 100644
--- a/chrome/browser/policy/configuration_policy_provider.h
+++ b/chrome/browser/policy/configuration_policy_provider.h
@@ -35,6 +35,9 @@ class ConfigurationPolicyProvider {
   // to post to the FILE thread, for example.
   virtual ~ConfigurationPolicyProvider();
 
+  // Perform an initial synchronous load before initialization.
+  virtual void InitialLoad();
+
   // Invoked as soon as the main message loops are spinning. Policy providers
   // are created early during startup to provide the initial policies; the
   // Init() call allows them to perform initialization tasks that require
@@ -75,6 +78,10 @@ class ConfigurationPolicyProvider {
   virtual void RegisterPolicyDomain(
       scoped_refptr<const PolicyDomainDescriptor> descriptor);
 
+  // Registers a policy domain without triggering a policy load.
+  virtual void InitialRegisterPolicyDomain(
+      scoped_refptr<const PolicyDomainDescriptor> descriptor);
+
  protected:
   // Subclasses must invoke this to update the policies currently served by
   // this provider. UpdatePolicy() takes ownership of |policies|.