Relayout windows in overview when display size changes.

ash/wm/overview/window_selector_unittest.cc

Index: ash/wm/overview/window_selector_unittest.cc
diff --git a/ash/wm/overview/window_selector_unittest.cc b/ash/wm/overview/window_selector_unittest.cc
index ce93b6976dd66daa284dfbd72fca57a57164039a..028bacd816856a72a8bc493ee611552cef90ea8f 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -1144,4 +1144,37 @@ TEST_F(WindowSelectorTest, CreateLabelUnderPanel) {
   EXPECT_EQ(label->text(), panel1_title);
 }
 
+// Tests that overview updates the window postions if the display orientation
+// changes.
+TEST_F(WindowSelectorTest, DisplayOrientationChanged) {
+  if (!SupportsHostWindowResize())
+    return;
+
+  aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
+  UpdateDisplay("600x200");
+  EXPECT_EQ("0,0 600x200", root_window->bounds().ToString());
+  gfx::Rect window_bounds(0, 0, 150, 150);
+  ScopedVector<aura::Window> windows;
+  for (int i = 0; i < 3; i++) {
+    windows.push_back(CreateWindow(window_bounds));
+  }
+
+  ToggleOverview();
+  for (ScopedVector<aura::Window>::iterator iter = windows.begin();
+       iter != windows.end(); ++iter) {
+    EXPECT_TRUE(root_window->bounds().Contains(
+        ToEnclosingRect(GetTransformedTargetBounds(*iter))));
+  }
+
+  // Rotate the display, windows should be repositioned to be within the screen
+  // bounds.
+  UpdateDisplay("600x200/r");
+  EXPECT_EQ("0,0 200x600", root_window->bounds().ToString());
+  for (ScopedVector<aura::Window>::iterator iter = windows.begin();
+       iter != windows.end(); ++iter) {
+    EXPECT_TRUE(root_window->bounds().Contains(
+        ToEnclosingRect(GetTransformedTargetBounds(*iter))));
+  }
+}
+
 }  // namespace ash