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..a99f1f45b1da3adeb74763c20fa98aaaac04208b 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 +22,8 @@ class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
  public:
   // Creates a policy store associated with the user signed in to this
   // |profile|.
-  explicit UserCloudPolicyStore(Profile* profile);
+  explicit UserCloudPolicyStore(Profile* profile,

[Joao da Silva, 2012/08/22 08:07:00]

Nit: no need to be explicit

[Andrew T Wilson (Slow), 2012/08/22 23:39:30]

Done.

+                                const FilePath& policy_file);
   virtual ~UserCloudPolicyStore();
 
   // CloudPolicyStore implementation.
@@ -29,6 +31,14 @@ class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
   virtual void Store(
       const enterprise_management::PolicyFetchResponse& policy) OVERRIDE;
 
+  // Callback invoked when a new policy has been loaded from disk. If
+  // |error| is true, there was an error reading the policy from disk.
+  // Otherwise |policy| contains the policy blob, or NULL if no policy was
+  // found on disk.
+  void PolicyLoaded(
+      bool error,
+      scoped_ptr<enterprise_management::PolicyFetchResponse> policy);
+
  protected:
   virtual void RemoveStoredPolicy() OVERRIDE;
 
@@ -39,14 +49,22 @@ class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
       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);
 };