Add unit tests for sub-components of CaptureScheduler.

remoting/base/running_average.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 "remoting/base/running_average.h"
+
 #include "base/logging.h"
-#include "remoting/base/running_average.h"
 
 namespace remoting {
 
 RunningAverage::RunningAverage(int window_size)
     : window_size_(window_size),
       sum_(0) {
-  CHECK(window_size_);
+  DCHECK_GT(window_size, 0);
 }
 
 RunningAverage::~RunningAverage() {
 }
 
 void RunningAverage::Record(int64 value) {
-  base::AutoLock auto_lock(lock_);
+  DCHECK(CalledOnValidThread());
 
   data_points_.push_back(value);
   sum_ += value;
 
   if (data_points_.size() > window_size_) {
     sum_ -= data_points_[0];
     data_points_.pop_front();
   }
 }
 
-double RunningAverage::Average() {
-  base::AutoLock auto_lock(lock_);
+double RunningAverage::Average() const {
+  DCHECK(CalledOnValidThread());
 
   if (data_points_.empty())
     return 0;
   return static_cast<double>(sum_) / data_points_.size();
 }
 
 }  // namespace remoting