Index: content/renderer/gpu/render_widget_compositor.cc |
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc |
index 3c0711a1a7fda3cc73d99074f55b35f62e1eb385..3de5b34bf270ede8da080557a4c38974f48c9517 100644 |
--- a/content/renderer/gpu/render_widget_compositor.cc |
+++ b/content/renderer/gpu/render_widget_compositor.cc |
@@ -201,8 +201,9 @@ void RenderWidgetCompositor::Initialize() { |
settings.throttle_frame_production = |
!cmd->HasSwitch(switches::kDisableGpuVsync); |
- settings.use_external_begin_frame_source = |
- cmd->HasSwitch(switches::kEnableBeginFrameScheduling); |
+#if !defined(OS_MACOSX) |
+ settings.use_external_begin_frame_source = true; |
+#endif |
settings.main_frame_before_activation_enabled = |
cmd->HasSwitch(cc::switches::kEnableMainFrameBeforeActivation) && |
!cmd->HasSwitch(cc::switches::kDisableMainFrameBeforeActivation); |