Remove synchronous GetDisplays() and Configure() from NativeDisplayDelegate

ui/display/chromeos/test/test_native_display_delegate.cc

Index: ui/display/chromeos/test/test_native_display_delegate.cc
diff --git a/ui/display/chromeos/test/test_native_display_delegate.cc b/ui/display/chromeos/test/test_native_display_delegate.cc
index ffcf2f32e47d611fc35c31fa608ed06bc42da3e2..0da2e1190f1ab0c6853dfb7aee1e81190924073d 100644
--- a/ui/display/chromeos/test/test_native_display_delegate.cc
+++ b/ui/display/chromeos/test/test_native_display_delegate.cc
@@ -56,18 +56,13 @@ void TestNativeDisplayDelegate::ForceDPMSOn() {
   log_->AppendAction(kForceDPMS);
 }
 
-std::vector<DisplaySnapshot*> TestNativeDisplayDelegate::GetDisplays() {
-  return outputs_;
-}
-
 void TestNativeDisplayDelegate::GetDisplays(
     const GetDisplaysCallback& callback) {
-  auto result = GetDisplays();
   if (run_async_) {
     base::MessageLoop::current()->PostTask(FROM_HERE,
-                                           base::Bind(callback, result));
+                                           base::Bind(callback, outputs_));
   } else {
-    callback.Run(result);
+    callback.Run(outputs_);
   }
 }