Initial support for native accessibility in ARC

components/exo/surface.cc

Index: components/exo/surface.cc
diff --git a/components/exo/surface.cc b/components/exo/surface.cc
index 01115e7f2cccf801d612a643f4203fb82be38fc0..fa9c87221b76a7dbcf7ac6ff96ed8d5889c99e14 100644
--- a/components/exo/surface.cc
+++ b/components/exo/surface.cc
@@ -662,6 +662,17 @@ void Surface::OnUpdateVSyncParameters(base::TimeTicks timebase,
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// Accessibility
+//
+void Surface::UpdateAXTreeID(int32_t id) {
+  LOG(ERROR) << "trying to update surface!" << id;
+  for (SurfaceObserver& observer : observers_) {
+    LOG(ERROR) << "update surface!" << id;
+    observer.OnSurfaceAXTreeChanged(id);
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // Buffer, private:
 
 Surface::State::State() : input_region(SkIRect::MakeLargest()) {}