Revert r95841 due to failing media_unittests on linux_shared bot.

media/base/state_matrix.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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_STATE_MATRIX_H_
 #define MEDIA_BASE_STATE_MATRIX_H_
 
 #include <map>
 
 #include "base/logging.h"
-#include "media/base/media_export.h"
 
 namespace media {
 
-class MEDIA_EXPORT StateMatrix {
+class StateMatrix {
  public:
   StateMatrix();
   ~StateMatrix();
 
   template <typename HandlerType>
   void AddState(int state, int (HandlerType::* handler)()) {
     CHECK(!IsStateDefined(state));
     StateEntryBase* entry = new StateEntry<HandlerType>(handler);
     states_.insert(std::make_pair(state, entry));
   }
@@ skipping 27 matching lines @@
 
   typedef std::map<int, StateEntryBase*> StateMap;
   StateMap states_;
 
   DISALLOW_COPY_AND_ASSIGN(StateMatrix);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_STATE_MATRIX_H_