FTL: Pull Flags into namespace

Bug: 185536303
Test: Build
Change-Id: Ia9aafc78565414815dfc14732ce85b06fa96e17b
diff --git a/libs/ftl/Android.bp b/libs/ftl/Android.bp
index ef20196..c010a2e 100644
--- a/libs/ftl/Android.bp
+++ b/libs/ftl/Android.bp
@@ -14,11 +14,11 @@
         address: true,
     },
     srcs: [
-        "Flags_test.cpp",
         "cast_test.cpp",
         "concat_test.cpp",
         "enum_test.cpp",
         "fake_guard_test.cpp",
+        "flags_test.cpp",
         "future_test.cpp",
         "small_map_test.cpp",
         "small_vector_test.cpp",
diff --git a/libs/ftl/Flags_test.cpp b/libs/ftl/flags_test.cpp
similarity index 98%
rename from libs/ftl/Flags_test.cpp
rename to libs/ftl/flags_test.cpp
index d241fa2..eea052b 100644
--- a/libs/ftl/Flags_test.cpp
+++ b/libs/ftl/flags_test.cpp
@@ -14,14 +14,15 @@
  * limitations under the License.
  */
 
+#include <ftl/flags.h>
 #include <gtest/gtest.h>
-#include <ftl/Flags.h>
 
 #include <type_traits>
 
 namespace android::test {
 
-using namespace android::flag_operators;
+using ftl::Flags;
+using namespace ftl::flag_operators;
 
 enum class TestFlags : uint8_t { ONE = 0x1, TWO = 0x2, THREE = 0x4 };