Relanding this as this did not fix the chromiumos breakage.

chrome/browser/policy/cloud_policy_store.h

Index: chrome/browser/policy/cloud_policy_store.h
===================================================================
--- chrome/browser/policy/cloud_policy_store.h	(revision 150399)
+++ chrome/browser/policy/cloud_policy_store.h	(working copy)
@@ -12,6 +12,8 @@
 #include "chrome/browser/policy/policy_map.h"
 #include "chrome/browser/policy/proto/device_management_backend.pb.h"
 
+class Profile;
+
 namespace policy {
 
 // Defines the low-level interface used by the cloud policy code to:
@@ -91,6 +93,12 @@
   // Removes the specified observer.
   void RemoveObserver(Observer* observer);
 
+  // Factory method to create a CloudPolicyStore appropriate for the current
+  // platform, for storing user policy for the user associated with the passed
+  // |profile|. Implementation is defined in the individual platform store
+  // files.
+  static scoped_ptr<CloudPolicyStore> CreateUserPolicyStore(Profile* profile);
+
  protected:
   // Invokes the corresponding callback on all registered observers.
   void NotifyStoreLoaded();