Fix a painting bug which occurred due to the change which reduces the size of the fullscreen chrome…

ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
index f79b3c42baf5477962e15f31e634c799c5c5eb2d..465d8bbe093b6bd6e310886a6e6a008a4be3ba1d 100644
--- a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
@@ -912,9 +912,10 @@ void DesktopWindowTreeHostWin::HandleWindowSizeChanged() {
   // changed (can occur on Windows 10 when snapping a window to the side of
   // the screen). In that case do a resize to the current size to reenable
   // swaps.
-  if (compositor())
+  if (compositor()) {
     compositor()->SetScaleAndSize(compositor()->device_scale_factor(),
-                                  compositor()->size());
+                                  GetBounds().size());
+  }
 }
 
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