[EXPERIMENT] Revert "Route D3D VSync signal to Compositor"

ui/gl/gl_switches.cc

Index: ui/gl/gl_switches.cc
diff --git a/ui/gl/gl_switches.cc b/ui/gl/gl_switches.cc
index ba72048a5a3319e8db0caded90590745407ed2ff..260f1d963b2c48b568ca737d7a7c17c810844039 100644
--- a/ui/gl/gl_switches.cc
+++ b/ui/gl/gl_switches.cc
@@ -147,12 +147,6 @@ const int kGLSwitchesCopiedFromGpuProcessHostNumSwitches =
 
 namespace features {
 
-#if defined(OS_WIN)
-// Wait for D3D VSync signals in GPU process (as opposed to delay based VSync
-// generated in Browser process based on VSync parameters).
-const base::Feature kD3DVsync{"D3DVsync", base::FEATURE_DISABLED_BY_DEFAULT};
-#endif  // defined(OS_WIN)
-
 // Allow putting a video swapchain underneath the main swapchain, so overlays
 // can be used even if there are controls on top of the video. This requires
 // the DirectCompositionOverlays feature to be enabled.