Reenable most panel interactive_ui_tests on Linux

chrome/browser/ui/panels/detached_panel_browsertest.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 "base/message_loop/message_loop.h"
 #include "chrome/browser/ui/panels/base_panel_browser_test.h"
 #include "chrome/browser/ui/panels/detached_panel_collection.h"
 #include "chrome/browser/ui/panels/native_panel.h"
 #include "chrome/browser/ui/panels/panel.h"
 #include "chrome/browser/ui/panels/panel_manager.h"
@@ skipping 23 matching lines @@
   // the top if the stacking mode is enabled.
   if (!PanelManager::IsPanelStackingEnabled())
     EXPECT_EQ(bounds.y(), panel->GetBounds().y());
   EXPECT_EQ(bounds.width(), panel->GetBounds().width());
   EXPECT_EQ(bounds.height(), panel->GetBounds().height());
   EXPECT_FALSE(panel->IsAlwaysOnTop());
 
   EXPECT_TRUE(panel_testing->IsButtonVisible(panel::CLOSE_BUTTON));
   // The minimize button will not be shown on some Linux desktop environment
   // that does not support system minimize.
-  if (PanelManager::CanUseSystemMinimize())
+  if (PanelManager::CanUseSystemMinimize() &&
+      PanelManager::IsPanelStackingEnabled()) {
     EXPECT_TRUE(panel_testing->IsButtonVisible(panel::MINIMIZE_BUTTON));
-  else
+  } else {
     EXPECT_FALSE(panel_testing->IsButtonVisible(panel::MINIMIZE_BUTTON));
+  }
   EXPECT_FALSE(panel_testing->IsButtonVisible(panel::RESTORE_BUTTON));
 
   EXPECT_EQ(panel::RESIZABLE_ALL, panel->CanResizeByMouse());
 
   EXPECT_EQ(panel::ALL_ROUNDED, panel_testing->GetWindowCornerStyle());
 
   Panel::AttentionMode expected_attention_mode =
       static_cast<Panel::AttentionMode>(Panel::USE_PANEL_ATTENTION |
                                          Panel::USE_SYSTEM_ATTENTION);
   EXPECT_EQ(expected_attention_mode, panel->attention_mode());
@@ skipping 187 matching lines @@
 
   // Panel should not be shown on full-screen mode.
   EXPECT_FALSE(panel_testing->IsWindowVisible());
 
   // Panel should become visible when leaving full-screen mode.
   mock_display_settings_provider()->EnableFullScreenMode(false);
   EXPECT_TRUE(panel_testing->IsWindowVisible());
 
   PanelManager::GetInstance()->CloseAll();
 }