Implement cloud policy invalidations using the invalidation service framework.

chrome/browser/policy/cloud/mock_cloud_policy_store.h

Index: chrome/browser/policy/cloud/mock_cloud_policy_store.h
diff --git a/chrome/browser/policy/cloud/mock_cloud_policy_store.h b/chrome/browser/policy/cloud/mock_cloud_policy_store.h
index 3908f511dc37fce6ae8fbf92ec4b29616598f36f..d21d6273194cfa400c162417835333ad8a828da8 100644
--- a/chrome/browser/policy/cloud/mock_cloud_policy_store.h
+++ b/chrome/browser/policy/cloud/mock_cloud_policy_store.h
@@ -18,6 +18,8 @@ class MockCloudPolicyStore : public CloudPolicyStore {
   MOCK_METHOD1(Store, void(const enterprise_management::PolicyFetchResponse&));
   MOCK_METHOD0(Load, void(void));
 
+  void SetPolicyChanged(bool changed);
+
   // Publish the protected members.
   using CloudPolicyStore::NotifyStoreLoaded;
   using CloudPolicyStore::NotifyStoreError;
@@ -28,6 +30,8 @@ class MockCloudPolicyStore : public CloudPolicyStore {
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockCloudPolicyStore);
+
+  uint32 last_hash_value_;
 };
 
 class MockCloudPolicyStoreObserver : public CloudPolicyStore::Observer {