Revert r95841 due to failing media_unittests on linux_shared bot.

media/base/pts_stream.h

 // 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.
 
 #ifndef MEDIA_BASE_PTS_STREAM_H_
 #define MEDIA_BASE_PTS_STREAM_H_
 
 // Under some conditions the decoded frames can get invalid or wrong timestamps:
 //    - compressed frames are often in decode timestamp (dts) order, which
 //      may not always be in presentation timestamp (pts) order;
 //    - decoder may report invalid timestamps for the decoded frames;
 //    - parser may report invalid timestamps for the compressed frames.
 //
 // To ensure that the decoded frames are displayed in the proper order, the
 // PtsStream class assembles the time information from different sources and
 // combines it into the "best guess" timestamp and duration for the current
 // frame. Data inside the decoded frame (if provided) is trusted the most,
 // followed by data from the packet stream. Estimation based on the last known
 // PTS and frame rate is reserved as a last-ditch effort.
 
 #include "base/time.h"
 #include "media/base/pts_heap.h"
 
 namespace media {
 
 class StreamSample;
 
-class MEDIA_EXPORT PtsStream {
+class PtsStream {
  public:
   PtsStream();
   ~PtsStream();
 
   // Initializes an instance using |frame_duration| as default. In absence of
   // other PTS information PtsStream will produce timestamps separated in time
   // by this duration.
   void Initialize(const base::TimeDelta& frame_duration);
 
   // Sets the |current_pts_| to specified |timestamp| and flushes all enqueued
@@ skipping 22 matching lines @@
 
   base::TimeDelta current_pts_;
   base::TimeDelta current_duration_;
 
   DISALLOW_COPY_AND_ASSIGN(PtsStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_PTS_STREAM_H_