Revert r95841 due to failing media_unittests on linux_shared bot.

media/base/djb2.h

-// 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.
 
 #ifndef MEDIA_BASE_DJB2_H_
 #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.
 // It has marginally more collisions than FNV1, but makes up for it in
 // performance.
 // The return value is suitable for table lookups.
 // For small fixed sizes (ie a pixel), it has low overhead and inlines well.
 // For large data sets, it optimizes into assembly/simd and is appropriate
 // for realtime applications.
 // See Also:
 //   http://www.cse.yorku.ca/~oz/hash.html
 
 static const uint32 kDJB2HashSeed = 5381u;
 
 // These functions perform DJB2 hash. The simplest call is DJB2Hash() to
 // generate the DJB2 hash of the given data:
 //   uint32 hash = DJB2Hash(data1, length1, kDJB2HashSeed);
 //
 // You can also compute the DJB2 hash of data incrementally by making multiple
 // calls to DJB2Hash():
 //   uint32 hash_value = kDJB2HashSeed;  // Initial seed for DJB2.
 //   for (size_t i = 0; i < copy_lines; ++i) {
 //     hash_value = DJB2Hash(source, bytes_per_line, hash_value);
 //     source += source_stride;
 //   }
 
 // 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_