| Index: ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
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| 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 6cb9469e647c54389cdd8858abb797d0c2b680e0..8f030fb9feab237fdec1cc2e942e940722bde350 100644
 | 
| --- a/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
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| +++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_win.cc
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| @@ -484,6 +484,10 @@ void DesktopWindowTreeHostWin::SizeConstraintsChanged() {
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|    message_handler_->SizeConstraintsChanged();
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|  }
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|  
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| +bool DesktopWindowTreeHostWin::ShouldUpdateWindowTransparency() const {
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| +  return true;
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| +}
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| +
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|  ////////////////////////////////////////////////////////////////////////////////
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|  // DesktopWindowTreeHostWin, WindowTreeHost implementation:
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|  
 | 
| 
 |