Remove function casting from Libsecret tests

chrome/browser/password_manager/native_backend_libsecret_unittest.cc

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/location.h"
 #include "base/run_loop.h"
@@ skipping 159 matching lines @@
       item = nullptr;
     }
   }
   global_mock_libsecret_items->swap(kept_mock_libsecret_items);
 
   g_hash_table_unref(attributes);
   return
       global_mock_libsecret_items->size() != kept_mock_libsecret_items.size();
 }
 
-MockSecretValue* mock_secret_item_get_secret(MockSecretItem* self) {
-  return self->value;
+SecretValue* mock_secret_item_get_secret(SecretItem* self) {
+  MockSecretValue* mock_value = reinterpret_cast<MockSecretItem*>(self)->value;
+  return reinterpret_cast<SecretValue*>(mock_value);
 }
 
-const gchar* mock_secret_value_get_text(MockSecretValue* value) {
-  return value->password;
+const gchar* mock_secret_value_get_text(SecretValue* value) {
+  return reinterpret_cast<MockSecretValue*>(value)->password;
 }
 
-GHashTable* mock_secret_item_get_attributes(MockSecretItem* self) {
+GHashTable* mock_secret_item_get_attributes(SecretItem* self) {
   // Libsecret backend will make unreference of received attributes, so in
   // order to save them we need to increase their reference number.
-  g_hash_table_ref(self->attributes);
-  return self->attributes;
+  MockSecretItem* mock_ptr = reinterpret_cast<MockSecretItem*>(self);
+  g_hash_table_ref(mock_ptr->attributes);
+  return mock_ptr->attributes;
 }
 
-gboolean mock_secret_item_load_secret_sync(MockSecretItem* self,
+gboolean mock_secret_item_load_secret_sync(SecretItem* self,
                                            GCancellable* cancellable,
                                            GError** error) {
   return true;
 }
 
 void mock_secret_value_unref(gpointer value) {
 }
 
 // Inherit to get access to protected fields.
 class MockLibsecretLoader : public LibsecretLoader {
  public:
   static bool LoadMockLibsecret() {
     secret_password_store_sync = &mock_secret_password_store_sync;
     secret_service_search_sync = &mock_secret_service_search_sync;
     secret_password_clear_sync = &mock_secret_password_clear_sync;
-    secret_item_get_secret =
-        (decltype(&::secret_item_get_secret)) & mock_secret_item_get_secret;
-    secret_value_get_text =
-        (decltype(&::secret_value_get_text)) & mock_secret_value_get_text;
-    secret_item_get_attributes = (decltype(&::secret_item_get_attributes)) &
-                                 mock_secret_item_get_attributes;
-    secret_item_load_secret_sync = (decltype(&::secret_item_load_secret_sync)) &
-                                   mock_secret_item_load_secret_sync;
-    secret_value_unref =
-        (decltype(&::secret_value_unref)) & mock_secret_value_unref;
+    secret_item_get_secret = &mock_secret_item_get_secret;
+    secret_value_get_text = &mock_secret_value_get_text;
+    secret_item_get_attributes = &mock_secret_item_get_attributes;
+    secret_item_load_secret_sync = &mock_secret_item_load_secret_sync;
+    secret_value_unref = &mock_secret_value_unref;
     libsecret_loaded_ = true;
     // Reset the state of the mock library.
     global_mock_libsecret_items->clear();
     global_mock_libsecret_reject_local_ids = false;
     return true;
   }
 };
 
 void CheckPasswordChanges(const PasswordStoreChangeList& expected_list,
                           const PasswordStoreChangeList& actual_list) {
@@ skipping 746 matching lines @@
   EXPECT_EQ(form_google_, *form_list[0]);
 
   EXPECT_EQ(1u, global_mock_libsecret_items->size());
   if (!global_mock_libsecret_items->empty()) {
     CheckMockSecretItem((*global_mock_libsecret_items)[0], form_google_,
                         "chrome-42");
   }
 }
 
 // TODO(mdm): add more basic tests here at some point.