Remove fake client creation from DBusClients' Create() functions.

chromeos/dbus/shill_manager_client_unittest.cc

Index: chromeos/dbus/shill_manager_client_unittest.cc
diff --git a/chromeos/dbus/shill_manager_client_unittest.cc b/chromeos/dbus/shill_manager_client_unittest.cc
index 2728361bfcac7d1b73be60bc50beb030accec6a6..7559b7b11e8fb42ca0eec27da2d24e2b4578b20c 100644
--- a/chromeos/dbus/shill_manager_client_unittest.cc
+++ b/chromeos/dbus/shill_manager_client_unittest.cc
@@ -59,7 +59,7 @@ class ShillManagerClientTest : public ShillClientUnittestBase {
   virtual void SetUp() {
     ShillClientUnittestBase::SetUp();
     // Create a client with the mock bus.
-    client_.reset(ShillManagerClient::Create(REAL_DBUS_CLIENT_IMPLEMENTATION));
+    client_.reset(ShillManagerClient::Create());
     client_->Init(mock_bus_.get());
     // Run the message loop to run the signal connection result callback.
     message_loop_.RunUntilIdle();