arc: enable Android tracing from chrome://tracing in dev mode

chrome/browser/chromeos/arc/arc_service_launcher.cc

Index: chrome/browser/chromeos/arc/arc_service_launcher.cc
diff --git a/chrome/browser/chromeos/arc/arc_service_launcher.cc b/chrome/browser/chromeos/arc/arc_service_launcher.cc
index 0365cbb26fa1308638d39dd5481c2fa181dec9eb..336048cd72a8367da21a27f25f8ea1efa9370f88 100644
--- a/chrome/browser/chromeos/arc/arc_service_launcher.cc
+++ b/chrome/browser/chromeos/arc/arc_service_launcher.cc
@@ -27,6 +27,7 @@
 #include "chrome/browser/chromeos/arc/policy/arc_policy_util.h"
 #include "chrome/browser/chromeos/arc/print/arc_print_service.h"
 #include "chrome/browser/chromeos/arc/process/arc_process_service.h"
+#include "chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.h"
 #include "chrome/browser/chromeos/arc/tts/arc_tts_service.h"
 #include "chrome/browser/chromeos/arc/video/gpu_arc_video_service_host.h"
 #include "chrome/browser/chromeos/arc/wallpaper/arc_wallpaper_service.h"
@@ -135,6 +136,8 @@ void ArcServiceLauncher::Initialize() {
   arc_service_manager_->AddService(
       base::MakeUnique<ArcStorageManager>(arc_bridge_service));
   arc_service_manager_->AddService(
+      base::MakeUnique<ArcTracingBridge>(arc_bridge_service));
+  arc_service_manager_->AddService(
       base::MakeUnique<ArcTtsService>(arc_bridge_service));
   arc_service_manager_->AddService(
       base::MakeUnique<ArcWallpaperService>(arc_bridge_service));