Minimized windows should not be activated by another user in multiprofile scenario.

chrome/browser/ui/ash/session_state_delegate_views.cc

 // Copyright (c) 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 "chrome/browser/ui/ash/session_state_delegate_views.h"
 
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/user_manager/empty_user_info.h"
@@ skipping 10 matching lines @@
   NOTIMPLEMENTED();
   return NULL;
 }
 
 content::BrowserContext* SessionStateDelegate::GetBrowserContextForWindow(
     aura::Window* window) {
   NOTIMPLEMENTED();
   return NULL;
 }
 
+const std::string& SessionStateDelegate::GetUserPresentingWindow(
+    aura::Window* window) {
+  return base::EmptyString();
+}
+
 int SessionStateDelegate::GetMaximumNumberOfLoggedInUsers() const {
   return 3;
 }
 
 int SessionStateDelegate::NumberOfLoggedInUsers() const {
   return 1;
 }
 
 bool SessionStateDelegate::IsActiveUserSessionStarted() const {
   return true;
@@ skipping 56 matching lines @@
 
 void SessionStateDelegate::AddSessionStateObserver(
     ash::SessionStateObserver* observer) {
   NOTIMPLEMENTED();
 }
 
 void SessionStateDelegate::RemoveSessionStateObserver(
     ash::SessionStateObserver* observer) {
   NOTIMPLEMENTED();
 }