Implement cloud policy invalidations using the invalidation service framework.

chrome/browser/policy/cloud/mock_cloud_policy_store.cc

Index: chrome/browser/policy/cloud/mock_cloud_policy_store.cc
diff --git a/chrome/browser/policy/cloud/mock_cloud_policy_store.cc b/chrome/browser/policy/cloud/mock_cloud_policy_store.cc
index 8c2fb3b1cd68ba0c22c9d2fcc3ff4e57ea1fbd90..1a1fab5c2e08232768a51fe53023c1794d00c17a 100644
--- a/chrome/browser/policy/cloud/mock_cloud_policy_store.cc
+++ b/chrome/browser/policy/cloud/mock_cloud_policy_store.cc
@@ -6,10 +6,15 @@
 
 namespace policy {
 
-MockCloudPolicyStore::MockCloudPolicyStore() {}
+MockCloudPolicyStore::MockCloudPolicyStore() : last_hash_value_(0) {}
 
 MockCloudPolicyStore::~MockCloudPolicyStore() {}
 
+void MockCloudPolicyStore::SetPolicyChanged(bool changed) {
+  // Modify the policy changed value by setting the hash value.
+  SetPolicyHashValue(changed ? ++last_hash_value_ : last_hash_value_);
+}
+
 MockCloudPolicyStoreObserver::MockCloudPolicyStoreObserver() {}
 
 MockCloudPolicyStoreObserver::~MockCloudPolicyStoreObserver() {}