[Notification] Make HTML5 Notification use ActionCenter on Windows 10, behind Flags.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 5c74de660fb31692169af2c391c3a7c1e5e7bba9..742e690e75d20504227035b4067b626e7fd31e51 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -575,7 +575,7 @@ NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 }
 
 NotificationPlatformBridge* BrowserProcessImpl::notification_platform_bridge() {
-#if defined(OS_ANDROID) || defined(OS_MACOSX)
+#if defined(OS_WIN) || defined(OS_ANDROID) || defined(OS_MACOSX)
   if (!created_notification_bridge_)
     CreateNotificationPlatformBridge();
   return notification_bridge_.get();
@@ -1062,11 +1062,13 @@ void BrowserProcessImpl::CreateIntranetRedirectDetector() {
 }
 
 void BrowserProcessImpl::CreateNotificationPlatformBridge() {
-#if (defined(OS_ANDROID) || defined(OS_MACOSX)) && defined(ENABLE_NOTIFICATIONS)
+#if defined(ENABLE_NOTIFICATIONS)
+#if defined(OS_WIN) || defined(OS_ANDROID) || defined(OS_MACOSX)
   DCHECK(notification_bridge_.get() == NULL);
   notification_bridge_.reset(NotificationPlatformBridge::Create());
   created_notification_bridge_ = true;
 #endif
+#endif
 }
 
 void BrowserProcessImpl::CreateNotificationUIManager() {