Move ContentVideoCaptureDeviceCore from src/content to src/media

media/capture/feedback_signal_accumulator.h

 // 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.
 
-#ifndef CONTENT_BROWSER_MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_
-#define CONTENT_BROWSER_MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_
+#ifndef MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_
+#define MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_
 
 #include "base/time/time.h"
-#include "content/common/content_export.h"
+#include "media/base/media_export.h"
 
-namespace content {
+namespace media {
 
 // Utility class for maintaining an exponentially-decaying average of feedback
 // signal values whose updates occur at undetermined, possibly irregular time
 // intervals.
 //
 // Feedback signals can be made by multiple sources.  Meaning, there can be
 // several values provided for the same timestamp.  In this case, the greatest
 // value is retained and used to re-compute the average.  Therefore, the values
 // provided to this class' methods should be appropriately translated with this
 // in mind.  For example, an "fraction available" metric should be translated
 // into a "fraction utilized" one.
 //
 // Usage note: Reset() must be called at least once before the first call to
 // Update().
-class CONTENT_EXPORT FeedbackSignalAccumulator {
+class MEDIA_EXPORT FeedbackSignalAccumulator {
  public:
   // |half_life| is the amount of time that must pass between two data points to
   // move the accumulated average value halfway in-between.  Example: If
   // |half_life| is one second, then calling Reset(0.0, t=0s) and then
   // Update(1.0, t=1s) will result in an accumulated average value of 0.5.
   explicit FeedbackSignalAccumulator(base::TimeDelta half_life);
 
   // Erase all memory of historical values, re-starting with the given
   // |starting_value|.
   void Reset(double starting_value, base::TimeTicks timestamp);
@@ skipping 18 matching lines @@
   const base::TimeDelta half_life_;
 
   base::TimeTicks reset_time_;  // |timestamp| passed in last call to Reset().
   double average_;  // Current accumulated average.
   double update_value_;  // Latest |value| accepted by Update().
   base::TimeTicks update_time_;  // Latest |timestamp| accepted by Update().
   double prior_average_;  // Accumulated average before last call to Update().
   base::TimeTicks prior_update_time_;  // |timestamp| in prior call to Update().
 };
 
-}  // namespace content
+}  // namespace media
 
-#endif  // CONTENT_BROWSER_MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_
+#endif  // MEDIA_CAPTURE_FEEDBACK_SIGNAL_ACCUMULATOR_H_