DesktopWindowTreeHostX11::GetWindowBoundsInScreen returns window bounds.

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
index a6f120943f57de515556c227b84f04f8f253b208..b9990b42734ecf3969e9df1182f06db658ede4b8 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc
@@ -444,6 +444,15 @@ void DesktopWindowTreeHostX11::GetWindowPlacement(
 }
 
 gfx::Rect DesktopWindowTreeHostX11::GetWindowBoundsInScreen() const {
+  // Use ui::GetOuterWindowBounds to get the window bounds including the frame.
+  gfx::Rect bounds;
+  if (xwindow_) {
+    if (ui::GetOuterWindowBounds(xwindow_, &bounds))
+      return bounds;
+  }
+
+  // Fall back to just returning the known bounds (which does not include the
+  // frame).
   return bounds_;
 }