Add vsync notification command line switch

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // By default, file:// URIs cannot read other file:// URIs. This is an
 // override for developers who need the old behavior for testing.
@@ skipping 749 matching lines @@
 const char kUseExynosVda[]                  = "use-exynos-vda";
 
 const char kEnableFixedPositionCreatesStackingContext[]
     = "enable-fixed-position-creates-stacking-context";
 const char kDisableFixedPositionCreatesStackingContext[]
     = "disable-fixed-position-creates-stacking-context";
 
 // Defer image decoding in WebKit until painting.
 const char kEnableDeferredImageDecoding[] = "enable-deferred-image-decoding";
 
+// Use a vsync signal from the browser to the renderer to schedule rendering.
+const char kEnableVsyncNotification[] = "enable-vsync-notification";
+
 // Disables history navigation in response to horizontal overscroll.
 const char kDisableOverscrollHistoryNavigation[] =
     "disable-overscroll-history-navigation";
 
 }  // namespace switches