Use vsync manager regardless of begin frame settings

ui/compositor/compositor.h

 // 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.
 
 #ifndef UI_COMPOSITOR_COMPOSITOR_H_
 #define UI_COMPOSITOR_COMPOSITOR_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 269 matching lines @@
   bool ScrollLayerTo(int layer_id, const gfx::ScrollOffset& offset);
 
   // The "authoritative" vsync interval, if provided, will override interval
   // reported from 3D context. This is typically the value reported by a more
   // reliable source, e.g, the platform display configuration.
   // In the particular case of ChromeOS -- this is the value queried through
   // XRandR, which is more reliable than the value queried through the 3D
   // context.
   void SetAuthoritativeVSyncInterval(const base::TimeDelta& interval);
 
+  // Most platforms set their vsync info via BrowerCompositorOutputSurface's
+  // OnUpdateVSyncParametersFromGpu, but Mac routes vsync info via the
+  // browser compositor instead through this path.
+  void SetDisplayVSyncParameters(base::TimeTicks timebase,
+                                 base::TimeDelta interval);
+
   // Sets the widget for the compositor to render into.
   void SetAcceleratedWidget(gfx::AcceleratedWidget widget);
   // Releases the widget previously set through SetAcceleratedWidget().
   // After returning it will not be used for rendering anymore.
   // The compositor must be set to invisible when taking away a widget.
   gfx::AcceleratedWidget ReleaseAcceleratedWidget();
   gfx::AcceleratedWidget widget() const;
 
 #if defined(USE_AURA)
   // Sets the window for the compositor to render into on mus+ash.
@@ skipping 129 matching lines @@
   scoped_refptr<cc::AnimationTimeline> animation_timeline_;
 
   base::WeakPtrFactory<Compositor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Compositor);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_COMPOSITOR_H_