Add browser test for notification action icons.
Also exposes the --enable-notification-action-icons runtime flag.
BUG=581336
Review URL: https://codereview.chromium.org/1693583002
Cr-Commit-Position: refs/heads/master@{#375858}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index d3f594a5..b06ac05 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1230,6 +1230,12 @@
IDS_NOTIFICATIONS_NATIVE_FLAG_DESCRIPTION, kOsMac,
SINGLE_VALUE_TYPE(switches::kEnableNativeNotifications)},
#endif
+#if defined(ENABLE_NOTIFICATIONS)
+ {"enable-notification-action-icons",
+ IDS_FLAGS_ENABLE_NOTIFICATION_ACTION_ICONS_NAME,
+ IDS_FLAGS_ENABLE_NOTIFICATION_ACTION_ICONS_DESCRIPTION, kOsAll,
+ SINGLE_VALUE_TYPE(switches::kEnableNotificationActionIcons)},
+#endif
#if defined(TOOLKIT_VIEWS)
{"disable-views-rect-based-targeting", // FLAGS:RECORD_UMA
IDS_FLAGS_VIEWS_RECT_BASED_TARGETING_NAME,
