Revert of Make DesktopWindowTreeHostX11::ShouldWindowContentsBeTransparent() relies on argb visual flag

ui/views/widget/widget_unittest.cc

Index: ui/views/widget/widget_unittest.cc
diff --git a/ui/views/widget/widget_unittest.cc b/ui/views/widget/widget_unittest.cc
index dadb85eb76ce19f4108f1402aae88f2556118592..f90572ca2ed9cd6939b1b186a03034646225a64b 100644
--- a/ui/views/widget/widget_unittest.cc
+++ b/ui/views/widget/widget_unittest.cc
@@ -7,7 +7,6 @@
 #include <set>
 
 #include "base/bind.h"
-#include "base/command_line.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ -15,7 +14,6 @@
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/hit_test.h"
-#include "ui/base/ui_base_switches.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
@@ -41,18 +39,12 @@
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/view_prop.h"
-#include "ui/base/win/shell.h"
 #include "ui/base/win/window_event_target.h"
 #include "ui/views/win/hwnd_util.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
-#endif
-
-#if defined(USE_X11) && !defined(OS_CHROMEOS)
-#include "ui/base/x/x11_util_internal.h"  // nogncheck
-#include "ui/gfx/x/x11_switches.h"        // nogncheck
 #endif
 
 namespace views {
@@ -3731,74 +3723,5 @@
 
 #endif  // defined(OS_WIN)
 
-#if !defined(OS_CHROMEOS)
-
-namespace {
-
-void InitializeWidgetForOpacity(
-    Widget& widget,
-    Widget::InitParams init_params,
-    const Widget::InitParams::WindowOpacity opacity) {
-#if defined(USE_X11)
-  // On Linux, transparent visuals is currently not activated by default.
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  command_line->AppendSwitch(switches::kEnableTransparentVisuals);
-
-  int depth = 0;
-  ui::ChooseVisualForWindow(NULL, &depth);
-  EXPECT_EQ(depth, 32);
-#elif defined(OS_WIN)
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  EXPECT_FALSE(command_line->HasSwitch(switches::kDisableDwmComposition));
-
-  // TODO(j.isorce): find a way to activate compositing for unit tests on win.
-  EXPECT_FALSE(ui::win::IsAeroGlassEnabled());
-#endif
-
-  init_params.opacity = opacity;
-  init_params.show_state = ui::SHOW_STATE_NORMAL;
-  init_params.bounds = gfx::Rect(0, 0, 500, 500);
-  init_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
-  init_params.native_widget =
-      CreatePlatformDesktopNativeWidgetImpl(init_params, &widget, nullptr);
-  widget.Init(init_params);
-
-#if defined(USE_X11)
-  EXPECT_TRUE(widget.IsTranslucentWindowOpacitySupported());
-#endif
-}
-
-}  // namespace
-
-// Test opacity when compositing is enabled.
-TEST_F(WidgetTest, Transparency_DesktopWidgetInferOpacity) {
-  Widget widget;
-  InitializeWidgetForOpacity(widget,
-                             CreateParams(Widget::InitParams::TYPE_WINDOW),
-                             Widget::InitParams::INFER_OPACITY);
-  EXPECT_EQ(IsNativeWindowTransparent(widget.GetNativeWindow()),
-            widget.ShouldWindowContentsBeTransparent());
-}
-
-TEST_F(WidgetTest, Transparency_DesktopWidgetOpaque) {
-  Widget widget;
-  InitializeWidgetForOpacity(widget,
-                             CreateParams(Widget::InitParams::TYPE_WINDOW),
-                             Widget::InitParams::OPAQUE_WINDOW);
-  EXPECT_EQ(IsNativeWindowTransparent(widget.GetNativeWindow()),
-            widget.ShouldWindowContentsBeTransparent());
-}
-
-TEST_F(WidgetTest, Transparency_DesktopWidgetTranslucent) {
-  Widget widget;
-  InitializeWidgetForOpacity(widget,
-                             CreateParams(Widget::InitParams::TYPE_WINDOW),
-                             Widget::InitParams::TRANSLUCENT_WINDOW);
-  EXPECT_EQ(IsNativeWindowTransparent(widget.GetNativeWindow()),
-            widget.ShouldWindowContentsBeTransparent());
-}
-
-#endif  // !defined(OS_CHROMEOS)
-
 }  // namespace test
 }  // namespace views