Revert r95841 due to failing media_unittests on linux_shared bot.

media/base/buffers.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.
 
 // Defines various types of timestamped media buffers used for transporting
 // data between filters.  Every buffer contains a timestamp in microseconds
 // describing the relative position of the buffer within the media stream, and
 // the duration in microseconds for the length of time the buffer will be
 // rendered.
 //
@@ skipping 12 matching lines @@
 // Duration*:    40000us      40000us      40000us      ...       40000us
 //
 //  *25fps = 0.04s per frame = 40000us per frame
 
 #ifndef MEDIA_BASE_BUFFERS_H_
 #define MEDIA_BASE_BUFFERS_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/time.h"
-#include "media/base/media_export.h"
 
 namespace media {
 
 // Indicates an invalid or missing timestamp.
-MEDIA_EXPORT extern const base::TimeDelta kNoTimestamp;
+extern const base::TimeDelta kNoTimestamp;
 
-class MEDIA_EXPORT StreamSample
-    : public base::RefCountedThreadSafe<StreamSample> {
+class StreamSample : public base::RefCountedThreadSafe<StreamSample> {
  public:
   // Returns the timestamp of this buffer in microseconds.
   base::TimeDelta GetTimestamp() const {
     return timestamp_;
   }
 
   // Returns the duration of this buffer in microseconds.
   base::TimeDelta GetDuration() const {
     return duration_;
   }
@@ skipping 19 matching lines @@
   virtual ~StreamSample();
 
   base::TimeDelta timestamp_;
   base::TimeDelta duration_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(StreamSample);
 };
 
 
-class MEDIA_EXPORT Buffer : public StreamSample {
+class Buffer : public StreamSample {
  public:
   // Returns a read only pointer to the buffer data.
   virtual const uint8* GetData() const = 0;
 
   // Returns the size of valid data in bytes.
   virtual size_t GetDataSize() const = 0;
 
   // If there's no data in this buffer, it represents end of stream.
   virtual bool IsEndOfStream() const;
 
  protected:
   virtual ~Buffer() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_BUFFERS_H_