Remove synchronous GetDisplays() and Configure() from NativeDisplayDelegate

ui/ozone/platform/dri/native_display_delegate_dri.cc

Index: ui/ozone/platform/dri/native_display_delegate_dri.cc
diff --git a/ui/ozone/platform/dri/native_display_delegate_dri.cc b/ui/ozone/platform/dri/native_display_delegate_dri.cc
index 89d0682a7db473da05194d5dfd69069d83c36669..213bd785fdd9919fe7f730ddc66fac3bda6e0ae1 100644
--- a/ui/ozone/platform/dri/native_display_delegate_dri.cc
+++ b/ui/ozone/platform/dri/native_display_delegate_dri.cc
@@ -164,7 +164,7 @@ std::vector<DisplaySnapshot*> NativeDisplayDelegateDri::GetDisplays() {
 
 void NativeDisplayDelegateDri::GetDisplays(
     const GetDisplaysCallback& callback) {
-  callback.Run(GetDisplays());
+  NOTREACHED();
 }
 
 void NativeDisplayDelegateDri::AddMode(const DisplaySnapshot& output,
@@ -204,7 +204,7 @@ void NativeDisplayDelegateDri::Configure(const DisplaySnapshot& output,
                                          const DisplayMode* mode,
                                          const gfx::Point& origin,
                                          const ConfigureCallback& callback) {
-  callback.Run(Configure(output, mode, origin));
+  NOTREACHED();
 }
 
 void NativeDisplayDelegateDri::CreateFrameBuffer(const gfx::Size& size) {