Add tests for the XPC client.

chrome/browser/notifications/notification_platform_bridge_mac.mm

Index: chrome/browser/notifications/notification_platform_bridge_mac.mm
diff --git a/chrome/browser/notifications/notification_platform_bridge_mac.mm b/chrome/browser/notifications/notification_platform_bridge_mac.mm
index e8f9f1cbc6e15ca045b0a9ba15fd7c33a7436917..85a88cb50b529141cc78012e46e30cde10c5e975 100644
--- a/chrome/browser/notifications/notification_platform_bridge_mac.mm
+++ b/chrome/browser/notifications/notification_platform_bridge_mac.mm
@@ -16,6 +16,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/notifications/alert_dispatcher.h"
 #include "chrome/browser/notifications/native_notification_display_service.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_common.h"
@@ -100,12 +101,6 @@ void DoProcessNotificationResponse(NotificationCommon::Operation operation,
 
 }  // namespace
 
-// static
-NotificationPlatformBridge* NotificationPlatformBridge::Create() {
-  return new NotificationPlatformBridgeMac(
-      [NSUserNotificationCenter defaultUserNotificationCenter]);
-}
-
 // A Cocoa class that represents the delegate of NSUserNotificationCenter and
 // can forward commands to C++.
 @interface NotificationCenterDelegate
@@ -114,7 +109,9 @@ NotificationPlatformBridge* NotificationPlatformBridge::Create() {
 @end
 
 // Interface to communicate with the Alert XPC service.
-@interface NotificationRemoteDispatcher : NSObject
+@interface AlertDispatcherImpl : NSObject<AlertDispatcher>
+
+- (instancetype)init;
 
 // Deliver a notification to the XPC service to be displayed as an alert.
 - (void)dispatchNotification:(NSDictionary*)data;
@@ -129,18 +126,12 @@ NotificationPlatformBridge* NotificationPlatformBridge::Create() {
 @end
 
 // /////////////////////////////////////////////////////////////////////////////
-
 NotificationPlatformBridgeMac::NotificationPlatformBridgeMac(
-    NSUserNotificationCenter* notification_center)
+    NSUserNotificationCenter* notification_center,
+    id<AlertDispatcher> alert_dispatcher)
     : delegate_([NotificationCenterDelegate alloc]),
       notification_center_(notification_center),
-#if BUILDFLAG(ENABLE_XPC_NOTIFICATIONS)
-      notification_remote_dispatcher_(
-          [[NotificationRemoteDispatcher alloc] init])
-#else
-      notification_remote_dispatcher_(nullptr)
-#endif  // ENABLE_XPC_NOTIFICATIONS
-{
+      alert_dispatcher_(alert_dispatcher) {
   [notification_center_ setDelegate:delegate_.get()];
 }
 
@@ -150,10 +141,22 @@ NotificationPlatformBridgeMac::~NotificationPlatformBridgeMac() {
   // TODO(miguelg) do not remove banners if possible.
   [notification_center_ removeAllDeliveredNotifications];
 #if BUILDFLAG(ENABLE_XPC_NOTIFICATIONS)
-  [notification_remote_dispatcher_ closeAllNotifications];
+  [alert_dispatcher_ closeAllNotifications];
 #endif  // BUILDFLAG(ENABLE_XPC_NOTIFICATIONS)
 }
 
+// static
+NotificationPlatformBridge* NotificationPlatformBridge::Create() {
+#if BUILDFLAG(ENABLE_XPC_NOTIFICATIONS)
+  return new NotificationPlatformBridgeMac(
+      [NSUserNotificationCenter defaultUserNotificationCenter],
+      [[AlertDispatcherImpl alloc] init]);
+#else
+  return new NotificationPlatformBridgeMac(
+      [NSUserNotificationCenter defaultUserNotificationCenter], nil);
+#endif  // ENABLE_XPC_NOTIFICATIONS
+}
+
 void NotificationPlatformBridgeMac::Display(
     NotificationCommon::Type notification_type,
     const std::string& notification_id,
@@ -229,7 +232,7 @@ void NotificationPlatformBridgeMac::Display(
   // banners.
   if (notification.never_timeout()) {
     NSDictionary* dict = [builder buildDictionary];
-    [notification_remote_dispatcher_ dispatchNotification:dict];
+    [alert_dispatcher_ dispatchNotification:dict];
   } else {
     NSUserNotification* toast = [builder buildUserNotification];
     [notification_center_ deliverNotification:toast];
@@ -265,9 +268,8 @@ void NotificationPlatformBridgeMac::Close(const std::string& profile_id,
   // If no banner existed with that ID try to see if there is an alert
   // in the xpc server.
   if (!notification_removed) {
-    [notification_remote_dispatcher_
-        closeNotificationWithId:candidate_id
-                  withProfileId:current_profile_id];
+    [alert_dispatcher_ closeNotificationWithId:candidate_id
+                                 withProfileId:current_profile_id];
   }
 #endif  // ENABLE_XPC_NOTIFICATIONS
 }
@@ -424,7 +426,7 @@ bool NotificationPlatformBridgeMac::VerifyNotificationData(
 
 @end
 
-@implementation NotificationRemoteDispatcher {
+@implementation AlertDispatcherImpl {
   // The connection to the XPC server in charge of delivering alerts.
   base::scoped_nsobject<NSXPCConnection> xpcConnection_;
 }