Add a preference for disabling vibration in notifications.

chrome/browser/notifications/platform_notification_service_impl.cc

Index: chrome/browser/notifications/platform_notification_service_impl.cc
diff --git a/chrome/browser/notifications/platform_notification_service_impl.cc b/chrome/browser/notifications/platform_notification_service_impl.cc
index b02457e24a1a7bcb6cba3b0d2dc735c41d341477..af9ed4b997d06cc0266b7f3fe8036d2c8bf41b46 100644
--- a/chrome/browser/notifications/platform_notification_service_impl.cc
+++ b/chrome/browser/notifications/platform_notification_service_impl.cc
@@ -33,6 +33,7 @@
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/common/content_settings.h"
 #include "components/content_settings/core/common/content_settings_types.h"
+#include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/pref_service.h"
 #include "components/url_formatter/url_formatter.h"
 #include "content/public/browser/browser_thread.h"
@@ -146,6 +147,14 @@ void CancelNotification(const std::string& notification_id,
 }  // namespace
 
 // static
+void PlatformNotificationServiceImpl::RegisterProfilePrefs(
+    user_prefs::PrefRegistrySyncable* registry) {
+#if defined(OS_ANDROID)
+  registry->RegisterBooleanPref(prefs::kNotificationsVibrateEnabled, true);

[Peter Beverloo, 2016/06/07 12:46:01]

Should this be part of the NotificationPlatformBridgeAndroid?

[Michael van Ouwerkerk, 2016/06/07 16:34:21]

Done.

+#endif
+}
+
+// static
 PlatformNotificationServiceImpl*
 PlatformNotificationServiceImpl::GetInstance() {
   return base::Singleton<PlatformNotificationServiceImpl>::get();