arc: enable Android tracing in verified-boot mode

chromeos/dbus/dbus_clients_browser.cc

Index: chromeos/dbus/dbus_clients_browser.cc
diff --git a/chromeos/dbus/dbus_clients_browser.cc b/chromeos/dbus/dbus_clients_browser.cc
index c353124530cc8e3afbe49dbd9e29381905a948ff..562524c1fd88c4d46cca409afb42c9f45630bd76 100644
--- a/chromeos/dbus/dbus_clients_browser.cc
+++ b/chromeos/dbus/dbus_clients_browser.cc
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "chromeos/dbus/arc_obb_mounter_client.h"
+#include "chromeos/dbus/arc_trace_agent.h"
 #include "chromeos/dbus/auth_policy_client.h"
 #include "chromeos/dbus/cros_disks_client.h"
 #include "chromeos/dbus/dbus_client_implementation_type.h"
@@ -33,6 +34,9 @@ DBusClientsBrowser::DBusClientsBrowser(bool use_real_clients) {
   else
     arc_obb_mounter_client_.reset(new FakeArcObbMounterClient);
 
+  // TODO(shunhsingou) create fake implementation.
+  arc_trace_agent_.reset(ArcTraceAgent::Create());
+
   if (use_real_clients)
     auth_policy_client_.reset(AuthPolicyClient::Create());
   else
@@ -79,6 +83,7 @@ void DBusClientsBrowser::Initialize(dbus::Bus* system_bus) {
   DCHECK(DBusThreadManager::IsInitialized());
 
   arc_obb_mounter_client_->Init(system_bus);
+  arc_trace_agent_->Init(system_bus);
   auth_policy_client_->Init(system_bus);
   cros_disks_client_->Init(system_bus);
   debug_daemon_client_->Init(system_bus);