Add proper namespace to GraphicTypes.

Renamed GraphicsTypes.h to GraphicTypes.h and added proper namespace to avoid
naming conflict.

BUG: 77156734
Test: Build and flash
Change-Id: Ibd9f454b5b72d5f8c6d94a3869a60a1bf821f106
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 4c041bc..bbf681e 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -43,6 +43,8 @@
 #include <private/gui/ComposerService.h>
 
 namespace android {
+
+using ui::ColorMode;
 // ---------------------------------------------------------------------------
 
 ANDROID_SINGLETON_STATIC_INSTANCE(ComposerService);