Add initial support for native Linux desktop notifications

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 34edc3caa532928701879a7588c463a7aa92ac8d..d970636125e713a9ed9fb8edb8d450b035bd7d9b 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -633,7 +633,8 @@ NotificationUIManager* BrowserProcessImpl::notification_ui_manager() {
 }
 
 NotificationPlatformBridge* BrowserProcessImpl::notification_platform_bridge() {
-#if defined(OS_ANDROID) || defined(OS_MACOSX)
+#if defined(OS_ANDROID) || defined(OS_MACOSX) || \
+    (defined(OS_LINUX) && !defined(OS_CHROMEOS))
   if (!created_notification_bridge_)
     CreateNotificationPlatformBridge();
   return notification_bridge_.get();
@@ -1162,7 +1163,8 @@ void BrowserProcessImpl::CreateIntranetRedirectDetector() {
 }
 
 void BrowserProcessImpl::CreateNotificationPlatformBridge() {
-#if (defined(OS_ANDROID) || defined(OS_MACOSX))
+#if defined(OS_ANDROID) || defined(OS_MACOSX) || \
+    (defined(OS_LINUX) && !defined(OS_CHROMEOS))
   DCHECK(!notification_bridge_);
   notification_bridge_.reset(NotificationPlatformBridge::Create());
   created_notification_bridge_ = true;