Adds support for multiple displays to WmTestBase

services/ui/public/cpp/tests/test_window_tree_client_setup.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/ui/public/cpp/tests/test_window_tree_client_setup.h"
 
 #include "services/ui/public/cpp/tests/test_window_tree.h"
 #include "services/ui/public/cpp/tests/window_tree_client_private.h"
 #include "services/ui/public/cpp/window_tree_client.h"
 #include "ui/display/display.h"
 
 namespace ui {
 
 TestWindowTreeClientSetup::TestWindowTreeClientSetup() {}
 
 TestWindowTreeClientSetup::~TestWindowTreeClientSetup() {}
 
 void TestWindowTreeClientSetup::Init(
     WindowTreeClientDelegate* window_tree_delegate) {
   CommonInit(window_tree_delegate, nullptr);
   WindowTreeClientPrivate(window_tree_client_.get())
       .OnEmbed(window_tree_.get());
 }
 
 void TestWindowTreeClientSetup::InitForWindowManager(
     WindowTreeClientDelegate* window_tree_delegate,
-    WindowManagerDelegate* window_manager_delegate,
-    const display::Display& display) {
+    WindowManagerDelegate* window_manager_delegate) {
   CommonInit(window_tree_delegate, window_manager_delegate);
   WindowTreeClientPrivate(window_tree_client_.get())
       .SetTreeAndClientId(window_tree_.get(), 1);
 }
 
 std::unique_ptr<WindowTreeClient>
 TestWindowTreeClientSetup::OwnWindowTreeClient() {
   DCHECK(window_tree_client_);
   return std::move(window_tree_client_);
 }
 
 WindowTreeClient* TestWindowTreeClientSetup::window_tree_client() {
   return window_tree_client_.get();
 }
 
 void TestWindowTreeClientSetup::CommonInit(
     WindowTreeClientDelegate* window_tree_delegate,
     WindowManagerDelegate* window_manager_delegate) {
   window_tree_.reset(new TestWindowTree);
   window_tree_client_.reset(new WindowTreeClient(
       window_tree_delegate, window_manager_delegate, nullptr));
 }
 
 }  // namespace ui