Set is_translucent even when Aero is disabled.

ui/views/widget/widget_hwnd_utils.cc

Index: ui/views/widget/widget_hwnd_utils.cc
diff --git a/ui/views/widget/widget_hwnd_utils.cc b/ui/views/widget/widget_hwnd_utils.cc
index 163e4b54b033c904237190867d81efef01f3c6bc..f64f9a513fa619762a769372c2a66ba76a4e774a 100644
--- a/ui/views/widget/widget_hwnd_utils.cc
+++ b/ui/views/widget/widget_hwnd_utils.cc
@@ -4,8 +4,6 @@
 
 #include "ui/views/widget/widget_hwnd_utils.h"
 
-#include <dwmapi.h>
-
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "ui/base/l10n/l10n_util_win.h"
@@ -151,11 +149,12 @@ void ConfigureWindowStyles(
   //    not have not have WM_SIZEBOX, WS_THICKFRAME or WS_CAPTION in its
   //    style.
   //
-  // This doesn't work when Aero is disabled, so disable it in that case.
-  // Software composited windows can continue to use WS_EX_LAYERED.
+  // This doesn't work when Aero is disabled, but leave the flag on so
+  // software composited windows can continue to use WS_EX_LAYERED. Code that
+  // would create translucent hardware-composited windows should do something
+  // else instead.
   bool is_translucent =
-      (params.opacity == Widget::InitParams::TRANSLUCENT_WINDOW &&
-       (ui::win::IsAeroGlassEnabled() || params.force_software_compositing));
+      (params.opacity == Widget::InitParams::TRANSLUCENT_WINDOW);
 
   CalculateWindowStylesFromInitParams(params, widget_delegate,
                                       native_widget_delegate, is_translucent,