FTL: Pull Flags into namespace

Bug: 185536303
Test: Build
Change-Id: Ia9aafc78565414815dfc14732ce85b06fa96e17b
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index bf58705..8641287 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -39,10 +39,11 @@
 using android::gui::WindowInfoHandle;
 using android::os::InputEventInjectionResult;
 using android::os::InputEventInjectionSync;
-using namespace android::flag_operators;
 
 namespace android::inputdispatcher {
 
+using namespace ftl::flag_operators;
+
 // An arbitrary time value.
 static const nsecs_t ARBITRARY_TIME = 1234;