Purge cache when the server removes the policy for an extension.

components/policy/core/common/cloud/cloud_policy_client_unittest.cc

Index: components/policy/core/common/cloud/cloud_policy_client_unittest.cc
diff --git a/components/policy/core/common/cloud/cloud_policy_client_unittest.cc b/components/policy/core/common/cloud/cloud_policy_client_unittest.cc
index 905b0e1b71e5a9d3f326c56691975ab6d93db5a6..767f1b83c62f1f813961db206f000ea0d8b660b7 100644
--- a/components/policy/core/common/cloud/cloud_policy_client_unittest.cc
+++ b/components/policy/core/common/cloud/cloud_policy_client_unittest.cc
@@ -504,6 +504,7 @@ TEST_F(CloudPolicyClientTest, PolicyFetchWithExtensionPolicy) {
       policy_response_.policy_response().response(0));
   expected_namespaces.insert(key);
   key.first = dm_protocol::kChromeExtensionPolicyType;
+  expected_namespaces.insert(key);
   for (size_t i = 0; i < arraysize(kExtensions); ++i) {
     key.second = kExtensions[i];
     em::PolicyData policy_data;
@@ -512,7 +513,6 @@ TEST_F(CloudPolicyClientTest, PolicyFetchWithExtensionPolicy) {
     expected_responses[key].set_policy_data(policy_data.SerializeAsString());
     policy_response_.mutable_policy_response()->add_response()->CopyFrom(
         expected_responses[key]);
-    expected_namespaces.insert(key);
   }
 
   // Make a policy fetch.
@@ -527,26 +527,21 @@ TEST_F(CloudPolicyClientTest, PolicyFetchWithExtensionPolicy) {
       .WillOnce(SaveArg<6>(&policy_request_));
   EXPECT_CALL(observer_, OnPolicyFetched(_));
   EXPECT_CALL(*status_provider_, OnSubmittedSuccessfully());
-  for (size_t i = 0; i < arraysize(kExtensions); ++i) {
-    client_->AddPolicyTypeToFetch(dm_protocol::kChromeExtensionPolicyType,
-                                  kExtensions[i]);
-  }
+  client_->AddPolicyTypeToFetch(dm_protocol::kChromeExtensionPolicyType,
+                                std::string());
   client_->FetchPolicy();
 
   // Verify that the request includes the expected namespaces.
   ASSERT_TRUE(policy_request_.has_policy_request());
   const em::DevicePolicyRequest& policy_request =
       policy_request_.policy_request();
-  ASSERT_EQ(static_cast<int>(1 + arraysize(kExtensions)),
-            policy_request.request_size());
+  ASSERT_EQ(2, policy_request.request_size());
   for (int i = 0; i < policy_request.request_size(); ++i) {
     const em::PolicyFetchRequest& fetch_request = policy_request.request(i);
     ASSERT_TRUE(fetch_request.has_policy_type());
-    std::string entity_id;
-    if (fetch_request.has_settings_entity_id())
-      entity_id = fetch_request.settings_entity_id();
+    EXPECT_FALSE(fetch_request.has_settings_entity_id());
     std::pair<std::string, std::string> key(fetch_request.policy_type(),
-                                            entity_id);
+                                            std::string());
     EXPECT_EQ(1u, expected_namespaces.erase(key));
   }
   EXPECT_TRUE(expected_namespaces.empty());