Convert RLZ to a buildflag header

chrome/browser/chromeos/login/login_utils_browsertest.cc

Index: chrome/browser/chromeos/login/login_utils_browsertest.cc
diff --git a/chrome/browser/chromeos/login/login_utils_browsertest.cc b/chrome/browser/chromeos/login/login_utils_browsertest.cc
index c50687be66c02e551a65d4a04268a0445badd4f2..b8730021123304bcb32885a67232d62c6f9bd89e 100644
--- a/chrome/browser/chromeos/login/login_utils_browsertest.cc
+++ b/chrome/browser/chromeos/login/login_utils_browsertest.cc
@@ -27,8 +27,9 @@
 #include "google_apis/gaia/gaia_urls.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/test/embedded_test_server/http_response.h"
+#include "rlz/features/features.h"
 
-#if defined(ENABLE_RLZ)
+#if BUILDFLAG(ENABLE_RLZ)
 #include "components/rlz/rlz_tracker.h"
 #endif
 
@@ -36,7 +37,7 @@ namespace chromeos {
 
 namespace {
 
-#if defined(ENABLE_RLZ)
+#if BUILDFLAG(ENABLE_RLZ)
 void GetAccessPointRlzInBackgroundThread(rlz_lib::AccessPoint point,
                                          base::string16* rlz) {
   ASSERT_FALSE(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
@@ -81,7 +82,7 @@ class LoginUtilsTest : public OobeBaseTest {
   DISALLOW_COPY_AND_ASSIGN(LoginUtilsTest);
 };
 
-#if defined(ENABLE_RLZ)
+#if BUILDFLAG(ENABLE_RLZ)
 IN_PROC_BROWSER_TEST_F(LoginUtilsTest, RlzInitialized) {
   WaitForSigninScreen();