Use aura::WindowProperty for title and name strings.

ash/display/window_tree_host_manager_unittest.cc

Index: ash/display/window_tree_host_manager_unittest.cc
diff --git a/ash/display/window_tree_host_manager_unittest.cc b/ash/display/window_tree_host_manager_unittest.cc
index 649b7f3beb7b1b74af553b9f531e0efb3f10a38c..292f686ac2ef6793113319df96d9d3416e7d1d6e 100644
--- a/ash/display/window_tree_host_manager_unittest.cc
+++ b/ash/display/window_tree_host_manager_unittest.cc
@@ -341,7 +341,7 @@ class TestEventHandler : public ui::EventHandler {
     aura::Window* target = static_cast<aura::Window*>(event->target());
     // Only record when the target is the wallpaper, which covers the entire
     // root window.
-    if (target->name() != kWallpaperView)
+    if (target->GetName() != kWallpaperView)
       return;
     touch_radius_x_ = event->pointer_details().radius_x;
     touch_radius_y_ = event->pointer_details().radius_y;
@@ -352,7 +352,7 @@ class TestEventHandler : public ui::EventHandler {
     aura::Window* target = static_cast<aura::Window*>(event->target());
     // Only record when the target is the wallpaper, which covers the entire
     // root window.
-    if (target->name() != kWallpaperView)
+    if (target->GetName() != kWallpaperView)
       return;
 
     if (event->type() == ui::ET_SCROLL) {