Move Singleton and related structs to namespace base

chromeos/accelerometer/accelerometer_reader.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 "chromeos/accelerometer/accelerometer_reader.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 326 matching lines @@
       index[i][j] = -1;
     }
   }
 }
 
 AccelerometerFileReader::ConfigurationData::~ConfigurationData() {
 }
 
 // static
 AccelerometerReader* AccelerometerReader::GetInstance() {
-  return Singleton<AccelerometerReader>::get();
+  return base::Singleton<AccelerometerReader>::get();
 }
 
 void AccelerometerReader::Initialize(
     scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner) {
   DCHECK(sequenced_task_runner.get());
   // Asynchronously detect and initialize the accelerometer to avoid delaying
   // startup.
   sequenced_task_runner->PostNonNestableTask(
       FROM_HERE,
       base::Bind(&AccelerometerFileReader::Initialize,
                  accelerometer_file_reader_.get(), sequenced_task_runner));
 }
 
 void AccelerometerReader::AddObserver(Observer* observer) {
   accelerometer_file_reader_->AddObserver(observer);
 }
 
 void AccelerometerReader::RemoveObserver(Observer* observer) {
   accelerometer_file_reader_->RemoveObserver(observer);
 }
 
 AccelerometerReader::AccelerometerReader()
     : accelerometer_file_reader_(new AccelerometerFileReader()) {
 }
 
 AccelerometerReader::~AccelerometerReader() {
 }
 
 }  // namespace chromeos