Update the window labels if they change in overview mode.

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 d552d7856e1b8de6b6d7edfb911fdca12819c0f2..8c177eb3036956b4d2f8eb730801d26f66572919 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -734,7 +734,7 @@ TEST_F(WindowSelectorTest, DISABLED_DragDropInProgress) {
 TEST_F(WindowSelectorTest, CreateLabelUnderWindow) {
   scoped_ptr<aura::Window> window(CreateWindow(gfx::Rect(0, 0, 100, 100)));
   base::string16 window_title = base::UTF8ToUTF16("My window");
-  window->set_title(window_title);
+  window->SetTitle(window_title);
   ToggleOverview();
   WindowSelectorItem* window_item = GetWindowItemsForRoot(0).back();
   views::Widget* widget = GetLabelWidget(window_item);
@@ -743,6 +743,12 @@ TEST_F(WindowSelectorTest, CreateLabelUnderWindow) {
   views::Label* label = static_cast<views::Label*>(widget->GetContentsView());
   // Verify the label matches the window title.
   EXPECT_EQ(label->text(), window_title);
+
+  // Update the window title and check that the label is updated, too.
+  base::string16 updated_title = base::UTF8ToUTF16("Updated title");
+  window->SetTitle(updated_title);
+  EXPECT_EQ(label->text(), updated_title);
+
   // Labels are located based on target_bounds, not the actual window item
   // bounds.
   gfx::Rect target_bounds(window_item->target_bounds());
@@ -761,8 +767,10 @@ TEST_F(WindowSelectorTest, CreateLabelUnderPanel) {
   scoped_ptr<aura::Window> panel2(CreatePanelWindow(gfx::Rect(0, 0, 100, 100)));
   base::string16 panel1_title = base::UTF8ToUTF16("My panel");
   base::string16 panel2_title = base::UTF8ToUTF16("Another panel");
-  panel1->set_title(panel1_title);
-  panel2->set_title(panel2_title);
+  base::string16 updated_panel1_title = base::UTF8ToUTF16("WebDriver Torso");
+  base::string16 updated_panel2_title = base::UTF8ToUTF16("Da panel");
+  panel1->SetTitle(panel1_title);
+  panel2->SetTitle(panel2_title);
   wm::ActivateWindow(panel1.get());
   ToggleOverview();
   WindowSelectorItem* window_item = GetWindowItemsForRoot(0).back();
@@ -772,6 +780,15 @@ TEST_F(WindowSelectorTest, CreateLabelUnderPanel) {
   views::Label* label = static_cast<views::Label*>(widget->GetContentsView());
   // Verify the label matches the active window title.
   EXPECT_EQ(label->text(), panel1_title);
+  // Verify that updating the title also updates the label.
+  panel1->SetTitle(updated_panel1_title);
+  EXPECT_EQ(label->text(), updated_panel1_title);
+  // After destroying the first panel, the title should match the second panel.
+  panel1.reset();
+  EXPECT_EQ(label->text(), panel2_title);
+  // Also test updating the title on the second panel.
+  panel2->SetTitle(updated_panel2_title);
+  EXPECT_EQ(label->text(), updated_panel2_title);
 }
 
 // Tests that overview updates the window positions if the display orientation
@@ -948,8 +965,8 @@ TEST_F(WindowSelectorTest, CloseButtonOnPanels) {
   aura::Window* window2 = widget2->GetNativeWindow();
   base::string16 panel1_title = base::UTF8ToUTF16("Panel 1");
   base::string16 panel2_title = base::UTF8ToUTF16("Panel 2");
-  window1->set_title(panel1_title);
-  window2->set_title(panel2_title);
+  window1->SetTitle(panel1_title);
+  window2->SetTitle(panel2_title);
   wm::ActivateWindow(window1);
   ToggleOverview();