Update the window labels if they change in overview mode.

ash/wm/overview/window_selector_item.cc

Index: ash/wm/overview/window_selector_item.cc
diff --git a/ash/wm/overview/window_selector_item.cc b/ash/wm/overview/window_selector_item.cc
index 7b0d872a9462a88a69efe6caccffec70ff599741..119152389a39d3d14815c91d3e1669aae23c372b 100644
--- a/ash/wm/overview/window_selector_item.cc
+++ b/ash/wm/overview/window_selector_item.cc
@@ -141,7 +141,6 @@ void WindowSelectorItem::SetBounds(aura::Window* root_window,
   }
   activate_window_button_->SetBounds(target_bounds);
 
-  // TODO(nsatragno): Handle window title updates.
   UpdateWindowLabels(target_bounds, root_window, animate);
 
   gfx::Rect inset_bounds(target_bounds);
@@ -170,6 +169,14 @@ void WindowSelectorItem::ButtonPressed(views::Button* sender,
   views::Widget::GetWidgetForNativeView(SelectionWindow())->Close();
 }
 
+void WindowSelectorItem::OnWindowTitleChanged(aura::Window* window,
+                                              const base::string16& title) {
+  if (window == SelectionWindow()) {
+    static_cast<views::Label*>(

[sky, 2014/06/25 16:24:44]

static_casts like this are often times fragile, in so far as it's easy for
someone to change the contents view code and have this continue to compile and
only get crashes later on. I would rather you add the label as a member and use
said member here.

[Nina, 2014/06/25 19:54:40]

Okay, naturally I also replaced the other places in the code where the static
cast was done. Please give it a new look.

+        window_label_->GetContentsView())->SetText(title);
+  }
+}
+
 void WindowSelectorItem::UpdateCloseButtonBounds(aura::Window* root_window,
                                                  bool animate) {
   gfx::RectF align_bounds(ScreenUtil::ConvertRectFromScreen(