Added labels under the windows in OverviewMode displaying their current name.

ash/wm/overview/window_selector_panels.cc

Index: ash/wm/overview/window_selector_panels.cc
diff --git a/ash/wm/overview/window_selector_panels.cc b/ash/wm/overview/window_selector_panels.cc
index bd165b21a9ba9f78b1ac81b9593481f8ccb729c9..83b3659fdf72d07dc3e5ce48518d1f28f6186cdc 100644
--- a/ash/wm/overview/window_selector_panels.cc
+++ b/ash/wm/overview/window_selector_panels.cc
@@ -89,6 +89,10 @@ WindowSelectorPanels::WindowSelectorPanels() {
 WindowSelectorPanels::~WindowSelectorPanels() {
 }
 
+base::string16 WindowSelectorPanels::GetLabelName() {
+  return SelectionWindow()->title();
+}
+
 void WindowSelectorPanels::AddWindow(aura::Window* window) {
   transform_windows_.push_back(new ScopedTransformPanelWindow(window));
 }