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

ash/shell/shell_delegate_impl.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 "ash/shell/shell_delegate_impl.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_user_wallpaper_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 71 matching lines @@
 
   // SessionStateDelegate:
   content::BrowserContext* GetBrowserContextByIndex(
       MultiProfileIndex index) override {
     return Shell::GetInstance()->delegate()->GetActiveBrowserContext();
   }
   content::BrowserContext* GetBrowserContextForWindow(
       aura::Window* window) override {
     return Shell::GetInstance()->delegate()->GetActiveBrowserContext();
   }
+  const std::string& GetUserPresentingWindow(aura::Window* window) override {
+    return base::EmptyString();
+  }
   int GetMaximumNumberOfLoggedInUsers() const override { return 3; }
   int NumberOfLoggedInUsers() const override {
     // ash_shell has 2 users.
     return 2;
   }
   bool IsActiveUserSessionStarted() const override { return true; }
   bool CanLockScreen() const override { return true; }
   bool IsScreenLocked() const override { return screen_locked_; }
   bool ShouldLockScreenBeforeSuspending() const override { return false; }
   void LockScreen() override {
@@ skipping 155 matching lines @@
   // Real GPU support depends on src/content, so just use a stub.
   return new GPUSupportStub;
 }
 
 base::string16 ShellDelegateImpl::GetProductName() const {
   return base::string16();
 }
 
 }  // namespace shell
 }  // namespace ash