FTL: Pull Flags into namespace

Bug: 185536303
Test: Build
Change-Id: Ia9aafc78565414815dfc14732ce85b06fa96e17b
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index b4fb51f..3803a78 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -19,20 +19,20 @@
 #pragma clang diagnostic ignored "-Wconversion"
 
 // #define LOG_NDEBUG 0
-#include "VirtualDisplaySurface.h"
 
 #include <cinttypes>
 
-#include "HWComposer.h"
-#include "SurfaceFlinger.h"
-
-#include <ftl/Flags.h>
 #include <ftl/enum.h>
+#include <ftl/flags.h>
 #include <gui/BufferItem.h>
 #include <gui/BufferQueue.h>
 #include <gui/IProducerListener.h>
 #include <system/window.h>
 
+#include "HWComposer.h"
+#include "SurfaceFlinger.h"
+#include "VirtualDisplaySurface.h"
+
 #define VDS_LOGE(msg, ...) ALOGE("[%s] " msg, \
         mDisplayName.c_str(), ##__VA_ARGS__)
 #define VDS_LOGW_IF(cond, msg, ...) ALOGW_IF(cond, "[%s] " msg, \
@@ -657,7 +657,7 @@
 
 std::string VirtualDisplaySurface::toString(CompositionType type) {
     using namespace std::literals;
-    return type == CompositionType::Unknown ? "Unknown"s : Flags(type).string();
+    return type == CompositionType::Unknown ? "Unknown"s : ftl::Flags(type).string();
 }
 
 } // namespace android