Handle pointer-events: none in browser process hittesting.

content/browser/compositor/delegated_frame_host.cc

Index: content/browser/compositor/delegated_frame_host.cc
diff --git a/content/browser/compositor/delegated_frame_host.cc b/content/browser/compositor/delegated_frame_host.cc
index 4a32e70df84bf4169f47d63708598409351a8346..53a943fb881a5c98f960c9a942db03fbdc919be5 100644
--- a/content/browser/compositor/delegated_frame_host.cc
+++ b/content/browser/compositor/delegated_frame_host.cc
@@ -207,11 +207,12 @@ uint32_t DelegatedFrameHost::GetSurfaceIdNamespace() {
 }
 
 cc::SurfaceId DelegatedFrameHost::SurfaceIdAtPoint(
+    cc::SurfaceHittestDelegate* delegate,
     const gfx::Point& point,
     gfx::Point* transformed_point) {
   if (surface_id_.is_null())
     return surface_id_;
-  cc::SurfaceHittest hittest(nullptr, GetSurfaceManager());
+  cc::SurfaceHittest hittest(delegate, GetSurfaceManager());
   gfx::Transform target_transform;
   cc::SurfaceId target_surface_id =
       hittest.GetTargetSurfaceAtPoint(surface_id_, point, &target_transform);