notifications: Refactor MockBalloonView into FakeBalloonView.

chrome/browser/notifications/notification_test_util.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 "chrome/browser/notifications/notification_test_util.h"
 
 MockNotificationDelegate::MockNotificationDelegate(const std::string& id)
     : id_(id) {
 }
 
 MockNotificationDelegate::~MockNotificationDelegate() {}
 
 std::string MockNotificationDelegate::id() const {
   return id_;
 }
 
 content::RenderViewHost* MockNotificationDelegate::GetRenderViewHost() const {
   return NULL;
 }
-
-void MockBalloonView::Close(bool by_user) {
-  balloon_->OnClose(by_user);
-}
-
-gfx::Size MockBalloonView::GetSize() const {
-  return balloon_->content_size();
-}
-
-BalloonHost* MockBalloonView::GetHost() const {
-  return NULL;
-}