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diff --git a/chrome/browser/chromeos/notifications/desktop_notifications_unittest.h b/chrome/browser/chromeos/notifications/desktop_notifications_unittest.h
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+++ b/chrome/browser/chromeos/notifications/desktop_notifications_unittest.h
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+// Copyright (c) 2010 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_
+#define CHROME_BROWSER_CHROMEOS_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_
+
+#include <set>
+#include <string>
+
+#include "base/message_loop.h"
+#include "base/string_util.h"
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/chromeos/notifications/balloon_collection_impl.h"
+#include "chrome/browser/notifications/balloon.h"
+#include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/notifications/notification_object_proxy.h"
+#include "chrome/browser/notifications/notification_test_util.h"
+#include "chrome/browser/notifications/notification_ui_manager.h"
+#include "chrome/browser/notifications/notifications_prefs_cache.h"
+#include "chrome/common/render_messages.h"
+#include "chrome/test/testing_profile.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+
+class DesktopNotificationsTest;
+typedef LoggingNotificationProxyBase<DesktopNotificationsTest>
+    LoggingNotificationProxy;
+
+// Test version of the balloon collection which counts the number
+// of notifications that are added to it.
+class MockBalloonCollection : public BalloonCollectionImpl {
+ public:
+  MockBalloonCollection();
+
+  // BalloonCollectionImpl overrides
+  virtual void Add(const Notification& notification,
+                   Profile* profile);
+  virtual bool Remove(const Notification& notification);
+  virtual Balloon* MakeBalloon(const Notification& notification,
+                               Profile* profile);
+  virtual void OnBalloonClosed(Balloon* source);
+
+  // Number of balloons being shown.
+  std::set<Balloon*>& balloons() { return balloons_; }
+  int count() const { return balloons_.size(); }
+
+  // Returns the highest y-coordinate of all the balloons in the collection.
+  int UppermostVerticalPosition();
+
+ private:
+  std::set<Balloon*> balloons_;
+  scoped_refptr<LoggingNotificationProxy> log_proxy_;
+};
+
+class DesktopNotificationsTest : public testing::Test {
+ public:
+  DesktopNotificationsTest();
+  ~DesktopNotificationsTest();
+
+  static void log(const std::string& message) {
+    log_output_.append(message);
+  }
+
+  Profile* profile() { return profile_.get(); }
+
+ protected:
+  // testing::Test overrides
+  virtual void SetUp();
+  virtual void TearDown();
+
+  void AllowOrigin(const GURL& origin) {
+    service_->GrantPermission(origin);
+  }
+
+  void DenyOrigin(const GURL& origin) {
+    service_->DenyPermission(origin);
+  }
+
+  int HasPermission(const GURL& origin) {
+    return service_->prefs_cache()->HasPermission(origin);
+  }
+
+  // Constructs a notification parameter structure for use in tests.
+  ViewHostMsg_ShowNotification_Params StandardTestNotification();
+
+  // Create a message loop to allow notifications code to post tasks,
+  // and a thread so that notifications code runs on the expected thread.
+  MessageLoopForUI message_loop_;
+  ChromeThread ui_thread_;
+
+  // Test profile.
+  scoped_ptr<TestingProfile> profile_;
+
+  // Mock balloon collection -- owned by the NotificationUIManager
+  MockBalloonCollection* balloon_collection_;
+
+  // Real UI manager.
+  scoped_ptr<NotificationUIManager> ui_manager_;
+
+  // Real DesktopNotificationService
+  scoped_ptr<DesktopNotificationService> service_;
+
+  // Contains the cumulative output of the unit test.
+  static std::string log_output_;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_NOTIFICATIONS_DESKTOP_NOTIFICATIONS_UNITTEST_H_