SF: Move frontend code to frontend namespace

Fixes: b/259553365
Test: presubmit
Change-Id: I47338ec3e8d151e09b3c22c0544ba948dc25b98d
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
index c5f5372..a5195f4 100644
--- a/services/surfaceflinger/DisplayDevice.cpp
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -41,7 +41,7 @@
 
 #include "Display/DisplaySnapshot.h"
 #include "DisplayDevice.h"
-#include "FrontEnd/FrontEndDisplayInfo.h"
+#include "FrontEnd/DisplayInfo.h"
 #include "Layer.h"
 #include "RefreshRateOverlay.h"
 #include "SurfaceFlinger.h"
@@ -132,7 +132,7 @@
     }
 }
 
-auto DisplayDevice::getFrontEndInfo() const -> FrontEndDisplayInfo {
+auto DisplayDevice::getFrontEndInfo() const -> frontend::DisplayInfo {
     gui::DisplayInfo info;
     info.displayId = getLayerStack().id;