[Mac] Properly show and hide the avatar button for the one-profile case.

chrome/test/base/testing_profile_manager.cc

 // Copyright (c) 2011 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/test/base/testing_profile_manager.h"
 
 #include "base/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
@@ skipping 61 matching lines @@
   DCHECK(called_set_up_);
   return CreateTestingProfile(name, UTF8ToUTF16(name), 0);
 }
 
 void TestingProfileManager::DeleteTestingProfile(const std::string& name) {
   DCHECK(called_set_up_);
 
   TestingProfilesMap::iterator it = testing_profiles_.find(name);
   DCHECK(it != testing_profiles_.end());
 
-  scoped_ptr<TestingProfile> profile(it->second);
-
-  profile_manager_->profiles_info_.erase(profile->GetPath());
+  TestingProfile* profile = it->second;
 
   ProfileInfoCache& cache = profile_manager_->GetProfileInfoCache();
   cache.DeleteProfileFromCache(profile->GetPath());
+
+  profile_manager_->profiles_info_.erase(profile->GetPath());
 }
 
 ProfileManager* TestingProfileManager::profile_manager() {
   DCHECK(called_set_up_);
   return profile_manager_;
 }
 
 ProfileInfoCache* TestingProfileManager::profile_info_cache() {
   DCHECK(called_set_up_);
   return &profile_manager_->GetProfileInfoCache();
 }
 
 void TestingProfileManager::SetUpInternal() {
   ASSERT_FALSE(browser_process_->profile_manager())
       << "ProfileManager already exists";
 
   // Set up the directory for profiles.
   ASSERT_TRUE(profiles_dir_.CreateUniqueTempDir());
 
   profile_manager_ = new testing::ProfileManager(profiles_dir_.path());
   browser_process_->SetProfileManager(profile_manager_);  // Takes ownership.
 
   called_set_up_ = true;
 }