Move Singleton and related structs to namespace base

content/browser/shared_worker/shared_worker_service_impl.cc

 // Copyright 2014 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 "content/browser/shared_worker/shared_worker_service_impl.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 #include <vector>
@@ skipping 203 matching lines @@
   const bool is_new_worker_;
   const SharedWorkerInstance instance_;
 };
 
 // static
 bool (*SharedWorkerServiceImpl::s_try_increment_worker_ref_count_)(int) =
     TryIncrementWorkerRefCount;
 
 SharedWorkerServiceImpl* SharedWorkerServiceImpl::GetInstance() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  return Singleton<SharedWorkerServiceImpl>::get();
+  return base::Singleton<SharedWorkerServiceImpl>::get();
 }
 
 SharedWorkerServiceImpl::SharedWorkerServiceImpl()
     : update_worker_dependency_(UpdateWorkerDependency),
       next_pending_instance_id_(0) {
 }
 
 SharedWorkerServiceImpl::~SharedWorkerServiceImpl() {}
 
 void SharedWorkerServiceImpl::ResetForTesting() {
@@ skipping 425 matching lines @@
     UpdateWorkerDependencyFunc new_func) {
   update_worker_dependency_ = new_func;
 }
 
 void SharedWorkerServiceImpl::ChangeTryIncrementWorkerRefCountFuncForTesting(
     bool (*new_func)(int)) {
   s_try_increment_worker_ref_count_ = new_func;
 }
 
 }  // namespace content