Route DXGI Frame Statistics to VSyncProvider

gpu/ipc/service/image_transport_surface_win.cc

 // 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.
 
 #include "gpu/ipc/service/image_transport_surface.h"
 
 #include <memory>
 
 #include "gpu/ipc/service/child_window_surface_win.h"
 #include "gpu/ipc/service/pass_through_image_transport_surface.h"
@@ skipping 14 matching lines @@
     gl::GLSurface::Format format) {
   DCHECK_NE(surface_handle, kNullSurfaceHandle);
 
   scoped_refptr<gl::GLSurface> surface;
   if (gl::GetGLImplementation() == gl::kGLImplementationEGLGLES2 &&
       gl::GLSurfaceEGL::IsDirectCompositionSupported()) {
     scoped_refptr<ChildWindowSurfaceWin> egl_surface(
         new ChildWindowSurfaceWin(manager, surface_handle));
     surface = egl_surface;
 
-    // TODO(jbauman): Get frame statistics from DirectComposition
-    std::unique_ptr<gfx::VSyncProvider> vsync_provider(
-        new gl::VSyncProviderWin(surface_handle));
+    std::unique_ptr<gfx::VSyncProvider> vsync_provider;
+    // Use DWM based gl::VSyncProviderWin provider only if sync control
+    // extension isn't supported. Otherwise the Initialize call below should
+    // assign a default VSyncProvider.
+    if (!ChildWindowSurfaceWin::HasEGLExtension("EGL_CHROMIUM_sync_control")) {
+      vsync_provider.reset(new gl::VSyncProviderWin(surface_handle));
+    }
+
     if (!egl_surface->Initialize(std::move(vsync_provider)))
       return nullptr;
   } else {
     surface = gl::init::CreateViewGLSurface(surface_handle);
     if (!surface)
       return nullptr;
   }
 
   return scoped_refptr<gl::GLSurface>(
       new PassThroughImageTransportSurface(manager, stub, surface.get()));
 }
 
 }  // namespace gpu