Remove balloon notification code. The last user was the Linux GTK port but that's deleted now.

chrome/browser/background/background_contents_service_unittest.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 <string>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 144 matching lines @@
 
 class BackgroundContentsServiceNotificationTest
     : public BrowserWithTestWindowTest {
  public:
   BackgroundContentsServiceNotificationTest() {}
   virtual ~BackgroundContentsServiceNotificationTest() {}
 
   // Overridden from testing::Test
   virtual void SetUp() {
     BrowserWithTestWindowTest::SetUp();
-    if (!NotificationUIManager::DelegatesToMessageCenter())
-      return;
-
     // In ChromeOS environment, BrowserWithTestWindowTest initializes
     // MessageCenter.
 #if !defined(OS_CHROMEOS)
     message_center::MessageCenter::Initialize();
 #endif
     profile_manager_.reset(new TestingProfileManager(
         TestingBrowserProcess::GetGlobal()));
     ASSERT_TRUE(profile_manager_->SetUp());
     MessageCenterNotificationManager* manager =
         static_cast<MessageCenterNotificationManager*>(
@@ skipping 163 matching lines @@
   service.ShutdownAssociatedBackgroundContents(base::ASCIIToUTF16("appid"));
   EXPECT_FALSE(service.IsTracked(contents));
   EXPECT_EQ(NULL,
             service.GetAppBackgroundContents(base::ASCIIToUTF16("appid")));
   EXPECT_EQ(1U, GetPrefs(&profile)->size());
   EXPECT_EQ(url2.spec(), GetPrefURLForApp(&profile, contents2->appid()));
 }
 
 #if defined(ENABLE_NOTIFICATIONS) && !defined(TOOLKIT_GTK)
 TEST_F(BackgroundContentsServiceNotificationTest, TestShowBalloon) {
-  if (!NotificationUIManager::DelegatesToMessageCenter())
-    return;
-
   scoped_refptr<extensions::Extension> extension =
       extension_test_util::LoadManifest("image_loading_tracker", "app.json");
   ASSERT_TRUE(extension.get());
   ASSERT_TRUE(extension->GetManifestData("icons"));
 
   const Notification* notification = CreateCrashNotification(extension);
   EXPECT_FALSE(notification->icon().IsEmpty());
 }
 
 // Verify if a test notification can show the default extension icon for
 // a crash notification for an extension without icon.
 TEST_F(BackgroundContentsServiceNotificationTest, TestShowBalloonNoIcon) {
-  if (!NotificationUIManager::DelegatesToMessageCenter())
-    return;
-
   // Extension manifest file with no 'icon' field.
   scoped_refptr<extensions::Extension> extension =
       extension_test_util::LoadManifest("app", "manifest.json");
   ASSERT_TRUE(extension.get());
   ASSERT_FALSE(extension->GetManifestData("icons"));
 
   const Notification* notification = CreateCrashNotification(extension);
   EXPECT_FALSE(notification->icon().IsEmpty());
 }
 #endif