Refactor DBusThreadManager to split away BT clients.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 2b73c9807cafb754d64f64aa989c7a9a77fae265..4376dcae3069e1eb182c3ef358b15eb6440e2c4f 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -141,6 +141,7 @@
 #include "base/bind_helpers.h"
 #include "base/sys_info.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
+#include "device/bluetooth/dbus/bluez_dbus_manager.h"
 #include "ui/chromeos/user_activity_power_manager_notifier.h"
 #include "ui/display/chromeos/display_configurator.h"
 #endif  // defined(OS_CHROMEOS)
@@ -854,6 +855,14 @@ void Shell::Init(const ShellInitParams& init_params) {
   // The DBusThreadManager must outlive this Shell. See the DCHECK in ~Shell.
   chromeos::DBusThreadManager* dbus_thread_manager =
       chromeos::DBusThreadManager::Get();
+
+  if (!bluez::BluezDBusManager::IsInitialized()) {
+    bluez::BluezDBusManager::Initialize(
+        dbus_thread_manager->GetSystemBus(),
+        dbus_thread_manager->IsUsingStub(
+            chromeos::DBusClientBundle::BLUETOOTH));
+  }

[oshima, 2015/09/28 17:34:12]

can you move this to AshTestHelper? That's where DBusThreadManager is
initialized.

[rkc, 2015/09/28 17:53:13]

Done.

+
   projecting_observer_.reset(
       new ProjectingObserver(dbus_thread_manager->GetPowerManagerClient()));
   display_configurator_->AddObserver(projecting_observer_.get());