cc: Implement unified BeginFrame on aura

ash/display/display_controller.cc

Index: ash/display/display_controller.cc
diff --git a/ash/display/display_controller.cc b/ash/display/display_controller.cc
index 7a3b6f9959daef8f7b0067eec767a425a89924be..9b18928516e31e18817ea10fac1045b437e4854f 100644
--- a/ash/display/display_controller.cc
+++ b/ash/display/display_controller.cc
@@ -36,7 +36,6 @@
 #include "ui/aura/window_tracker.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/compositor/compositor.h"
-#include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/wm/public/activation_client.h"
@@ -149,9 +148,9 @@ void SetDisplayPropertiesOnHost(AshWindowTreeHost* ash_host,
   DisplayMode mode =
       GetDisplayManager()->GetActiveModeForDisplayId(display.id());
   if (mode.refresh_rate > 0.0f) {
-    host->compositor()->vsync_manager()->SetAuthoritativeVSyncInterval(
-        base::TimeDelta::FromMicroseconds(
-            base::Time::kMicrosecondsPerSecond / mode.refresh_rate));
+    host->compositor()->SetAuthoritativeVSyncInterval(
+        base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond /
+                                          mode.refresh_rate));
   }
 
   // Just movnig the display requires the full redraw.