MonitorManager to manage multiple monitors.

ui/aura/env.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/env.h"
 #include "ui/aura/env_observer.h"
+#include "ui/aura/monitor_manager.h"
 #include "ui/aura/root_window_host.h"
 #include "ui/aura/window.h"
 
 namespace aura {
 
 // static
 Env* Env::instance_ = NULL;
 
 ////////////////////////////////////////////////////////////////////////////////
 // Env, public:
 
-Env::Env() : mouse_button_flags_(0), stacking_client_(NULL) {
+Env::Env()
+    : mouse_button_flags_(0),
+      stacking_client_(NULL),
+      monitor_manager_(NULL)
+{
 #if !defined(OS_MACOSX)
   dispatcher_.reset(CreateDispatcher());
 #endif
 }
 
 Env::~Env() {}
 
 // static
 Env* Env::GetInstance() {
   if (!instance_)
     instance_ = new Env;
   return instance_;
 }
 
 // static
 void Env::DeleteInstance() {
   delete instance_;
   instance_ = NULL;
 }
 
 void Env::AddObserver(EnvObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void Env::RemoveObserver(EnvObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+void Env::SetMonitorManager(MonitorManager* monitor_manager) {
+  monitor_manager_.reset(monitor_manager);
+}
+
 #if !defined(OS_MACOSX)
 MessageLoop::Dispatcher* Env::GetDispatcher() {
   return dispatcher_.get();
 }
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
 // Env, private:
 
 void Env::NotifyWindowInitialized(Window* window) {
   FOR_EACH_OBSERVER(EnvObserver, observers_, OnWindowInitialized(window));
 }
 
 }  // namespace aura