Revert r95841 due to failing media_unittests on linux_shared bot.

media/base/djb2.h

Index: media/base/djb2.h
===================================================================
--- media/base/djb2.h	(revision 95843)
+++ media/base/djb2.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 
@@ -6,7 +6,6 @@
 #define MEDIA_BASE_DJB2_H_
 
 #include "base/basictypes.h"
-#include "media/base/media_export.h"
 
 // DJB2 is a hash algorithm with excellent distribution and speed
 // on many different sets.
@@ -35,7 +34,7 @@
 
 // For the given buffer of data, compute the DJB2 hash of
 // the data. You can call this any number of times during the computation.
-MEDIA_EXPORT uint32 DJB2Hash(const void* buf, size_t len, uint32 seed);
+uint32 DJB2Hash(const void* buf, size_t len, uint32 seed);
 
 #endif  // MEDIA_BASE_DJB2_H_