Use aura::WindowProperty for title and name strings.

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index 24288c8fe5d137072d4abc5acf72f9af81670f41..cb76f43f8739e548010cadb0ec56becbe6cde702 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -372,7 +372,7 @@ void NativeWidgetAura::GetWindowPlacement(
 bool NativeWidgetAura::SetWindowTitle(const base::string16& title) {
   if (!window_)
     return false;
-  if (window_->title() == title)
+  if (window_->GetTitle() == title)
     return false;
   window_->SetTitle(title);
   return true;
@@ -774,7 +774,7 @@ void NativeWidgetAura::RepostNativeEvent(gfx::NativeEvent native_event) {
 }
 
 std::string NativeWidgetAura::GetName() const {
-  return window_ ? window_->name() : std::string();
+  return window_ ? window_->GetName() : std::string();
 }
 
 ////////////////////////////////////////////////////////////////////////////////