Make KeystoneGlue less antisocial

chrome/app/keystone_glue_unittest.mm

 // Copyright (c) 2009 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.
 
 #import <Foundation/Foundation.h>
 #import <objc/objc-class.h>
 
 #import "chrome/app/keystone_glue.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
@@ skipping 132 matching lines @@
   IMP newInfoImp_ = [[FakeKeystoneGlue class] instanceMethodForSelector:ids];
   Method infoMethod_ = class_getInstanceMethod([KeystoneGlue class], ids);
   method_setImplementation(infoMethod_, newInfoImp_);
 
   SEL lks = @selector(loadKeystoneRegistration);
   IMP oldLoadImp_ = [[KeystoneGlue class] instanceMethodForSelector:lks];
   IMP newLoadImp_ = [[FakeKeystoneGlue class] instanceMethodForSelector:lks];
   Method loadMethod_ = class_getInstanceMethod([KeystoneGlue class], lks);
   method_setImplementation(loadMethod_, newLoadImp_);
 
-  // Dump any existing KeystoneGlue shared instance so that a new one can be
-  // created with the mocked methods.
-  [KeystoneGlue releaseDefaultKeystoneGlue];
   KeystoneGlue *glue = [KeystoneGlue defaultKeystoneGlue];
   ASSERT_TRUE(glue);
 
   // Fix back up the class to the way we found it.
   method_setImplementation(infoMethod_, oldInfoImp_);
   method_setImplementation(loadMethod_, oldLoadImp_);
-  [KeystoneGlue releaseDefaultKeystoneGlue];
 }
 
 TEST_F(KeystoneGlueTest, BasicUse) {
   FakeKeystoneGlue* glue = [[[FakeKeystoneGlue alloc] init] autorelease];
   [glue loadParameters];
   ASSERT_TRUE([glue dictReadCorrectly]);
 
   // Likely returns NO in the unit test, but call it anyway to make
   // sure it doesn't crash.
   [glue loadKeystoneRegistration];
 
   // Confirm we start up an active timer
   [glue registerWithKeystone];
   ASSERT_TRUE([glue hasATimer]);
   [glue stopTimer];
 
   // Brief exercise of callbacks
   [glue addFakeRegistration];
   [glue checkForUpdate];
   [glue installUpdate];
   ASSERT_TRUE([glue confirmCallbacks]);
 }
 
 }  // namespace