Add panels as a single group of windows per display for overview window cycling.

ui/aura/window_unittest.cc

Index: ui/aura/window_unittest.cc
diff --git a/ui/aura/window_unittest.cc b/ui/aura/window_unittest.cc
index 320d1a61f7b052bc61c95eaa2ebe159bf019f1af..fa4c66a65e0da4b740722524e0e87fccab5fd80b 100644
--- a/ui/aura/window_unittest.cc
+++ b/ui/aura/window_unittest.cc
@@ -1531,6 +1531,33 @@ TEST_F(WindowTest, Visibility) {
   EXPECT_EQ(1, d2.shown());
 }
 
+// Verifies that IsVisible will immediately return the state set by the last
+// call to SetVisible even if the window is animating visiblility.
+TEST_F(WindowTest, IsVisibleRespectsSetVisible) {
+  // We cannot short-circuit animations in this test.
+  ui::ScopedAnimationDurationScaleMode normal_duration_mode(
+      ui::ScopedAnimationDurationScaleMode::NORMAL_DURATION);
+
+  scoped_ptr<Window> w1(
+      CreateTestWindowWithBounds(gfx::Rect(0, 0, 100, 100), root_window()));
+  EXPECT_FALSE(!w1->layer());

[sky, 2013/09/13 21:46:44]

ASSERT (otherwise you're going to crash on 1547).

[flackr, 2013/09/13 22:28:38]

Done.

+
+  // Start an animation to hide the window.
+  {
+    ui::ScopedLayerAnimationSettings settings(w1->layer()->GetAnimator());
+    w1->layer()->SetVisible(false);
+  }
+
+  // Window is still visible, but is animating to be hidden.
+  EXPECT_TRUE(w1->IsVisible());
+  EXPECT_FALSE(w1->layer()->GetTargetVisibility());
+
+  // Now, explicitly hide the window and verify that IsVisible corresponds to
+  // the hidden state.
+  w1->Hide();
+  EXPECT_FALSE(w1->IsVisible());
+}
+
 TEST_F(WindowTest, IgnoreEventsTest) {
   TestWindowDelegate d11;
   TestWindowDelegate d12;