exo: Fix multi-display hardware cursor

ui/aura/test/test_cursor_client.cc

 // Copyright 2013 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 "ui/aura/test/test_cursor_client.h"
 
 #include "ui/aura/client/cursor_client_observer.h"
+#include "ui/display/display.h"
 
 namespace aura {
 namespace test {
 
 TestCursorClient::TestCursorClient(aura::Window* root_window)
     : visible_(true),
       should_hide_cursor_on_key_event_(true),
       mouse_events_enabled_(true),
       cursor_lock_count_(0),
       calls_to_set_cursor_(0),
@@ skipping 43 matching lines @@
 void TestCursorClient::DisableMouseEvents() {
   mouse_events_enabled_ = false;
 }
 
 bool TestCursorClient::IsMouseEventsEnabled() const {
   return mouse_events_enabled_;
 }
 
 void TestCursorClient::SetDisplay(const display::Display& display) {}
 
+const display::Display& TestCursorClient::GetDisplay() const {
+  static const display::Display display;
+  return display;
+}
+
 void TestCursorClient::LockCursor() {
   cursor_lock_count_++;
 }
 
 void TestCursorClient::UnlockCursor() {
   cursor_lock_count_--;
   if (cursor_lock_count_ < 0)
     cursor_lock_count_ = 0;
 }
 
@@ skipping 11 matching lines @@
   observers_.RemoveObserver(observer);
 }
 
 bool TestCursorClient::ShouldHideCursorOnKeyEvent(
     const ui::KeyEvent& event) const {
   return should_hide_cursor_on_key_event_;
 }
 
 }  // namespace test
 }  // namespace aura