Added code to persist downloaded cloud policy to disk.

chrome/browser/policy/user_cloud_policy_store.h

Index: chrome/browser/policy/user_cloud_policy_store.h
diff --git a/chrome/browser/policy/user_cloud_policy_store.h b/chrome/browser/policy/user_cloud_policy_store.h
index f75f4a6535b9f2b443d1fd6b11d3a12aa8b48015..8be8247dc54a9cc2616c7c7fe75a8a9a542ac54b 100644
--- a/chrome/browser/policy/user_cloud_policy_store.h
+++ b/chrome/browser/policy/user_cloud_policy_store.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/policy/user_cloud_policy_store_base.h"
 
@@ -21,7 +22,7 @@ class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
  public:
   // Creates a policy store associated with the user signed in to this
   // |profile|.
-  explicit UserCloudPolicyStore(Profile* profile);
+  UserCloudPolicyStore(Profile* profile, const FilePath& policy_file);
   virtual ~UserCloudPolicyStore();
 
   // CloudPolicyStore implementation.
@@ -33,20 +34,32 @@ class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
   virtual void RemoveStoredPolicy() OVERRIDE;
 
  private:
+
+  // Callback invoked when a new policy has been loaded from disk.
+  void PolicyLoaded(struct PolicyLoadResult policy_load_result);
+
   // Starts policy blob validation. |callback| is invoked once validation is
   // complete.
   void Validate(
       scoped_ptr<enterprise_management::PolicyFetchResponse> policy,
       const UserCloudPolicyValidator::CompletionCallback& callback);
 
+  // Callback invoked to install a just-loaded policy after validation has
+  // finished.
+  void InstallLoadedPolicyAfterValidation(UserCloudPolicyValidator* validator);
+
   // Callback invoked to store the policy after validation has finished.
   void StorePolicyAfterValidation(UserCloudPolicyValidator* validator);
 
+  // WeakPtrFactory used to create callbacks for validating and storing policy.
   base::WeakPtrFactory<UserCloudPolicyStore> weak_factory_;
 
   // Weak pointer to the profile associated with this store.
   Profile* profile_;
 
+  // Path to file where we store persisted policy.
+  FilePath backing_file_path_;
+
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyStore);
 };