Keep the mouse cursor within desktop

ui/aura/monitor_manager.cc

 // Copyright (c) 2012 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/monitor_manager.h"
 
 #include <stdio.h>
 
 #include "ui/aura/env.h"
 #include "ui/aura/monitor.h"
+#include "ui/aura/root_window.h"
 #include "ui/aura/root_window_host.h"
 #include "ui/gfx/rect.h"
 
 namespace aura {
 namespace {
 // Default bounds for a monitor.
 static const int kDefaultHostWindowX = 200;
 static const int kDefaultHostWindowY = 200;
 static const int kDefaultHostWindowWidth = 1280;
 static const int kDefaultHostWindowHeight = 1024;
@@ skipping 16 matching lines @@
     bounds = gfx::Rect(aura::RootWindowHost::GetNativeScreenSize());
   }
   Monitor* monitor = new Monitor();
   monitor->set_bounds(bounds);
   return monitor;
 }
 
 // static
 RootWindow* MonitorManager::CreateRootWindowForPrimaryMonitor() {
   MonitorManager* manager = aura::Env::GetInstance()->monitor_manager();
-  return manager->CreateRootWindowForMonitor(manager->GetMonitorAt(0));
+  RootWindow* root =
+      manager->CreateRootWindowForMonitor(manager->GetMonitorAt(0));
+  if (use_fullscreen_host_window_)
+    root->ConfineCursorToWindow();
+  return root;
 }
 
 MonitorManager::MonitorManager() {
 }
 
 MonitorManager::~MonitorManager() {
 }
 
 void MonitorManager::AddObserver(MonitorObserver* observer) {
   observers_.AddObserver(observer);
@@ skipping 12 matching lines @@
   FOR_EACH_OBSERVER(MonitorObserver, observers_,
                     OnMonitorAdded(monitor));
 }
 
 void MonitorManager::NotifyMonitorRemoved(const Monitor* monitor) {
   FOR_EACH_OBSERVER(MonitorObserver, observers_,
                     OnMonitorRemoved(monitor));
 }
 
 }  // namespace aura