Removing --disable/enable-threaded-compositing cmdline switches.

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 67c5e5d64a18b8230867611b904860f3603a688c..2b82a395c6c40bcf34d955a7428b2f2a0fa85488 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -2274,7 +2274,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kDisableSlimmingPaintInvalidation,
     switches::kDisableSmoothScrolling,
     switches::kDisableSpeechAPI,
-    switches::kDisableThreadedCompositing,
     switches::kDisableThreadedScrolling,
     switches::kDisableTouchAdjustment,
     switches::kDisableTouchDragDrop,
@@ -2311,7 +2310,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kEnableSlimmingPaintInvalidation,
     switches::kEnableSmoothScrolling,
     switches::kEnableStatsTable,
-    switches::kEnableThreadedCompositing,
     switches::kEnableTouchDragDrop,
     switches::kEnableUseZoomForDSF,
     switches::kEnableViewport,