arc: enable Android tracing in verified-boot 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 891dc842eb7d46136c14b0a1fba8043119edc0a7..526d6761224b4eca007e05cbc604dd5eb853b8b3 100644
--- a/chrome/browser/chromeos/arc/arc_service_launcher.cc
+++ b/chrome/browser/chromeos/arc/arc_service_launcher.cc
@@ -18,6 +18,7 @@
 #include "chrome/browser/chromeos/arc/policy/arc_policy_bridge.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/trace/arc_trace_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"
@@ -129,6 +130,8 @@ void ArcServiceLauncher::Initialize() {
   arc_service_manager_->AddService(
       base::MakeUnique<ArcStorageManager>(arc_bridge_service));
   arc_service_manager_->AddService(

[Yusuke Sato, 2017/01/04 23:55:47]

Can you instead do something like this?

 auto trace = base::MakeUnique<ArcTraceBridge>(arc_bridge_service));
 DBusThreadManager::Get()->GetArcTraceAgent()->SetDelegate(trace.get());
 arc_service_manager_->AddService(std::move(trace));

[Earl Ou, 2017/01/16 14:05:39]

I move this to the ctor of ArcTraceBridge

+      base::MakeUnique<ArcTraceBridge>(arc_bridge_service));
+  arc_service_manager_->AddService(
       base::MakeUnique<ArcTtsService>(arc_bridge_service));
   arc_service_manager_->AddService(
       base::MakeUnique<ArcWallpaperService>(arc_bridge_service));