ChromeOS: Remove MockDBusThreadManager.

chrome/browser/chromeos/login/screens/update_screen_browsertest.cc

Index: chrome/browser/chromeos/login/screens/update_screen_browsertest.cc
diff --git a/chrome/browser/chromeos/login/screens/update_screen_browsertest.cc b/chrome/browser/chromeos/login/screens/update_screen_browsertest.cc
index 55915ab00c8b2bd7da71afd6c2b4e7c2d569bbc7..869e10c20a969b29c13771501d072edb39accebd 100644
--- a/chrome/browser/chromeos/login/screens/update_screen_browsertest.cc
+++ b/chrome/browser/chromeos/login/screens/update_screen_browsertest.cc
@@ -44,12 +44,13 @@ class UpdateScreenTest : public WizardInProcessBrowserTest {
   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
     FakeDBusThreadManager* fake_dbus_thread_manager =
         new FakeDBusThreadManager;
+    fake_update_engine_client_ = new FakeUpdateEngineClient;
+    fake_dbus_thread_manager->SetUpdateEngineClient(
+        scoped_ptr<UpdateEngineClient>(fake_update_engine_client_));
+
     DBusThreadManager::InitializeForTesting(fake_dbus_thread_manager);
     WizardInProcessBrowserTest::SetUpInProcessBrowserTestFixture();
 
-    fake_update_engine_client_
-        = fake_dbus_thread_manager->fake_update_engine_client();
-
     // Setup network portal detector to return online state for both
     // ethernet and wifi networks. Ethernet is an active network by
     // default.