Fix missing shadows for tooltip and menu

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
 
 #include <X11/extensions/shape.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xatom.h>
 #include <X11/Xregion.h>
@@ skipping 1340 matching lines @@
       window_type = atom_cache_.GetAtom("_NET_WM_WINDOW_TYPE_NORMAL");
       break;
   }
   // An in-activatable window should not interact with the system wm.
   if (!activatable_)
     swa.override_redirect = True;
 
   if (swa.override_redirect)
     attribute_mask |= CWOverrideRedirect;
 
-  Visual* visual;
-  int depth;
-  ui::ChooseVisualForWindow(true, &visual, &depth);
-  if (depth == 32) {
+  const bool enable_transparent_visuals =
+      params.type == Widget::InitParams::TYPE_DRAG ||
+      params.type == Widget::InitParams::TYPE_WINDOW;
+
+  Visual* visual = CopyFromParent;
+  int depth = CopyFromParent;
+  ui::ChooseVisualForWindow(enable_transparent_visuals, &visual, &depth);
+  if (enable_transparent_visuals && depth == 32) {
     attribute_mask |= CWColormap;
     swa.colormap =
         XCreateColormap(xdisplay_, x_root_window_, visual, AllocNone);
 
     // x.org will BadMatch if we don't set a border when the depth isn't the
     // same as the parent depth.
     attribute_mask |= CWBorderPixel;
     swa.border_pixel = 0;
 
     // A compositing manager is required to support transparency.
@@ skipping 933 matching lines @@
   if (linux_ui) {
     ui::NativeTheme* native_theme = linux_ui->GetNativeTheme(window);
     if (native_theme)
       return native_theme;
   }
 
   return ui::NativeThemeAura::instance();
 }
 
 }  // namespace views