Mac: Added a delay before panels go to minimized state from title-only state.

chrome/browser/ui/panels/panel_browser_view_browsertest.cc

Index: chrome/browser/ui/panels/panel_browser_view_browsertest.cc
diff --git a/chrome/browser/ui/panels/panel_browser_view_browsertest.cc b/chrome/browser/ui/panels/panel_browser_view_browsertest.cc
index 9ca07cff18a2d4c2fd615aef21c98c58c054d59e..2c32163d7c1a13f3162aad56769d3a58e5217c81 100644
--- a/chrome/browser/ui/panels/panel_browser_view_browsertest.cc
+++ b/chrome/browser/ui/panels/panel_browser_view_browsertest.cc
@@ -241,23 +241,37 @@ class PanelBrowserViewTest : public BasePanelBrowserTest {
     EXPECT_EQ(Panel::MINIMIZED, panel3->expansion_state());
     EXPECT_EQ(2, panel_manager->minimized_panel_count());
 
-    mock_auto_hiding_desktop_bar()->SetVisibility(
-        AutoHidingDesktopBar::ALIGN_BOTTOM, AutoHidingDesktopBar::VISIBLE);
-    panel_manager->BringUpOrDownTitlebars(true);
-    MessageLoopForUI::current()->RunAllPending();
-    EXPECT_EQ(Panel::TITLE_ONLY, panel1->expansion_state());
-    EXPECT_EQ(Panel::EXPANDED, panel2->expansion_state());
-    EXPECT_EQ(Panel::TITLE_ONLY, panel3->expansion_state());
-    EXPECT_EQ(2, panel_manager->minimized_panel_count());
+    {
+      mock_auto_hiding_desktop_bar()->SetVisibility(
+          AutoHidingDesktopBar::ALIGN_BOTTOM, AutoHidingDesktopBar::VISIBLE);
+
+      ui_test_utils::WindowedNotificationObserver signal(
+          chrome::NOTIFICATION_PANEL_CHANGED_EXPANSION_STATE,
+          content::Source<Panel>(panel1));
+      panel_manager->BringUpOrDownTitlebars(true);
+      signal.Wait();
+
+      EXPECT_EQ(Panel::TITLE_ONLY, panel1->expansion_state());
+      EXPECT_EQ(Panel::EXPANDED, panel2->expansion_state());
+      EXPECT_EQ(Panel::TITLE_ONLY, panel3->expansion_state());
+      EXPECT_EQ(2, panel_manager->minimized_panel_count());
+    }
 
-    mock_auto_hiding_desktop_bar()->SetVisibility(
-        AutoHidingDesktopBar::ALIGN_BOTTOM, AutoHidingDesktopBar::HIDDEN);
-    panel_manager->BringUpOrDownTitlebars(false);
-    MessageLoopForUI::current()->RunAllPending();
-    EXPECT_EQ(Panel::MINIMIZED, panel1->expansion_state());
-    EXPECT_EQ(Panel::EXPANDED, panel2->expansion_state());
-    EXPECT_EQ(Panel::MINIMIZED, panel3->expansion_state());
-    EXPECT_EQ(2, panel_manager->minimized_panel_count());
+    {
+      mock_auto_hiding_desktop_bar()->SetVisibility(
+          AutoHidingDesktopBar::ALIGN_BOTTOM, AutoHidingDesktopBar::HIDDEN);
+
+      ui_test_utils::WindowedNotificationObserver signal(
+          chrome::NOTIFICATION_PANEL_CHANGED_EXPANSION_STATE,
+          content::Source<Panel>(panel1));
+      panel_manager->BringUpOrDownTitlebars(false);
+      signal.Wait();
+
+      EXPECT_EQ(Panel::MINIMIZED, panel1->expansion_state());
+      EXPECT_EQ(Panel::EXPANDED, panel2->expansion_state());
+      EXPECT_EQ(Panel::MINIMIZED, panel3->expansion_state());
+      EXPECT_EQ(2, panel_manager->minimized_panel_count());
+    }
 
     // Test if it is OK to bring up title-bar given the mouse position.
     EXPECT_TRUE(panel_manager->ShouldBringUpTitlebars(