Use DwmGetCompositionTimingInfo to get vsync info on Windows

ui/surface/accelerated_surface_win.cc

Index: ui/surface/accelerated_surface_win.cc
diff --git a/ui/surface/accelerated_surface_win.cc b/ui/surface/accelerated_surface_win.cc
index 698f5fcd3d3dbb53c5c241514b1bb8c9de93187c..a3a7b86fbc8a0252bab306a77124158d887f6c18 100644
--- a/ui/surface/accelerated_surface_win.cc
+++ b/ui/surface/accelerated_surface_win.cc
@@ -4,6 +4,7 @@
 
 #include "ui/surface/accelerated_surface_win.h"
 
+#include <dwmapi.h>
 #include <windows.h>
 #include <algorithm>
 
@@ -843,6 +844,24 @@ void AcceleratedPresenter::DoReleaseSurface() {
   source_texture_.Release();
 }
 
+void AcceleratedPresenter::GetPresentationStats(base::TimeTicks* timebase,
+                                                uint32* interval_numerator,
+                                                uint32* interval_denominator) {
+  lock_.AssertAcquired();
+
+  DWM_TIMING_INFO timingInfo;
+  timingInfo.cbSize = sizeof(timingInfo);
+  HRESULT gctiResult = DwmGetCompositionTimingInfo(window_, &timingInfo);
+  if (gctiResult != S_OK)
+    return;
+
+  *timebase = base::TimeTicks::FromQPCValue(
+      static_cast<LONGLONG>(timingInfo.qpcVBlank));
+  // Swap the numerator/denominator to convert frequency to period.
+  *interval_numerator = timingInfo.rateRefresh.uiDenominator;
+  *interval_denominator = timingInfo.rateRefresh.uiNumerator;
+}
+
 AcceleratedSurface::AcceleratedSurface(gfx::NativeWindow window)
     : presenter_(g_accelerated_presenter_map.Pointer()->CreatePresenter(
           window)) {