Move Singleton and related structs to namespace base

components/nacl/browser/pnacl_host.cc

 // Copyright 2013 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 "components/nacl/browser/pnacl_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 66 matching lines @@
       weak_factory_(this) {}
 
 PnaclHost::~PnaclHost() {
   // When PnaclHost is destroyed, it's too late to post anything to the cache
   // thread (it will hang shutdown). So just leak the cache backend.
   pnacl::PnaclTranslationCache* cache = disk_cache_.release();
   (void)cache;
 }
 
 PnaclHost* PnaclHost::GetInstance() {
-  return Singleton<PnaclHost>::get();
+  return base::Singleton<PnaclHost>::get();
 }
 
 PnaclHost::PendingTranslation::PendingTranslation()
     : process_handle(base::kNullProcessHandle),
       render_view_id(0),
       nexe_fd(NULL),
       got_nexe_fd(false),
       got_cache_reply(false),
       got_cache_hit(false),
       is_incognito(false),
@@ skipping 588 matching lines @@
   DCHECK(pending_backend_operations_ >= 0);
   if (pending_translations_.empty() &&
       pending_backend_operations_ <= 0 &&
       cache_state_ == CacheReady) {
     cache_state_ = CacheUninitialized;
     disk_cache_.reset();
   }
 }
 
 }  // namespace pnacl