[GTK] Report isMinimized and correctly restore app windows.

chrome/browser/extensions/api/app_window/app_window_apitest.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 "apps/shell_window.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/platform_app_browsertest_util.h"
 #include "chrome/browser/extensions/shell_window_registry.h"
@@ skipping 105 matching lines @@
     base::RunLoop run_loop;
     run_loop.RunUntilIdle();
   }
   ShellWindow* shell_window = GetFirstShellWindow();
   ASSERT_TRUE(shell_window);
   EXPECT_NE(std::string::npos,
             shell_window->app_icon_url().spec().find("icon.png"));
   EXPECT_EQ(1, test_observer->icon_updates());
 }
 
-// TODO(asargent) - Figure out what to do about the fact that minimize events
-// don't work under ubuntu unity.
-// (crbug.com/162794 and https://bugs.launchpad.net/unity/+bug/998073).
 // TODO(linux_aura) http://crbug.com/163931
 // Flaky on Mac, http://crbug.com/232330
-#if defined(TOOLKIT_VIEWS) && !(defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA))
+#if (defined(TOOLKIT_VIEWS) || defined(TOOLKIT_GTK)) && \
+    !(defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_AURA))
 
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, WindowsApiProperties) {
   EXPECT_TRUE(
       RunExtensionTest("platform_apps/windows_api_properties")) << message_;
 }
 
 #endif  // defined(TOOLKIT_VIEWS)
 
 }  // namespace extensions