Move ContentVideoCaptureDeviceCore from src/content to src/media

media/capture/feedback_signal_accumulator.cc

 // Copyright (c) 2015 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/media/capture/feedback_signal_accumulator.h"
+#include "media/capture/feedback_signal_accumulator.h"
 
 #include <algorithm>
 #include <cmath>
 
-namespace content {
+namespace media {
 
 FeedbackSignalAccumulator::FeedbackSignalAccumulator(base::TimeDelta half_life)
     : half_life_(half_life) {
   DCHECK(half_life_ > base::TimeDelta());
 }
 
 void FeedbackSignalAccumulator::Reset(double starting_value,
                                       base::TimeTicks timestamp) {
   DCHECK(!timestamp.is_null());
   average_ = update_value_ = prior_average_ = starting_value;
@@ skipping 25 matching lines @@
 
   const double elapsed_us =
       static_cast<double>((update_time_ - prior_update_time_).InMicroseconds());
   const double weight = elapsed_us / (elapsed_us + half_life_.InMicroseconds());
   average_ = weight * update_value_ + (1.0 - weight) * prior_average_;
   DCHECK(std::isfinite(average_));
 
   return true;
 }
 
-}  // namespace content
+}  // namespace media