Convert RLZ to a buildflag header

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index dcf863d1f89a10a9078d6d48ac2a5a09f7b5e334..ab34cda844052ffe288539b11209621f87645480 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -163,6 +163,7 @@
 #include "net/http/http_stream_factory.h"
 #include "net/url_request/url_request.h"
 #include "printing/features/features.h"
+#include "rlz/features/features.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/layout.h"
 #include "ui/base/material_design/material_design_controller.h"
@@ -246,10 +247,10 @@
 #include "printing/printed_document.h"
 #endif  // BUILDFLAG(ENABLE_PRINT_PREVIEW) && !defined(OFFICIAL_BUILD)
 
-#if defined(ENABLE_RLZ)
+#if BUILDFLAG(ENABLE_RLZ)
 #include "chrome/browser/rlz/chrome_rlz_tracker_delegate.h"
 #include "components/rlz/rlz_tracker.h"
-#endif  // defined(ENABLE_RLZ)
+#endif  // BUILDFLAG(ENABLE_RLZ)
 
 #if BUILDFLAG(ENABLE_WEBRTC)
 #include "chrome/browser/media/webrtc/webrtc_log_util.h"
@@ -1708,7 +1709,7 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   }
 #endif  // defined(OS_WIN)
 
-#if defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
+#if BUILDFLAG(ENABLE_RLZ) && !defined(OS_CHROMEOS)
   // Init the RLZ library. This just binds the dll and schedules a task on the
   // file thread to be run sometime later. If this is the first run we record
   // the installation event.
@@ -1725,7 +1726,7 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
       ChromeRLZTrackerDelegate::IsGoogleDefaultSearch(profile_),
       ChromeRLZTrackerDelegate::IsGoogleHomepage(profile_),
       ChromeRLZTrackerDelegate::IsGoogleInStartpages(profile_));
-#endif  // defined(ENABLE_RLZ) && !defined(OS_CHROMEOS)
+#endif  // BUILDFLAG(ENABLE_RLZ) && !defined(OS_CHROMEOS)
 
   // Configure modules that need access to resources.
   net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);