Create media.dll.

media/base/media.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.
 
 // Contains code that should be used for initializing, or querying the state
 // of the media library as a whole.
 
 #ifndef MEDIA_BASE_MEDIA_H_
 #define MEDIA_BASE_MEDIA_H_
 
+#include "media/base/media_export.h"
+
 class FilePath;
 
 namespace media {
 
 // Attempts to initialize the media library (loading DLLs, DSOs, etc.).
 //
 // If |module_dir| is the emptry string, then the system default library paths
 // are searched for the dynamic libraries.  If a |module_dir| is provided, then
 // only the specified |module_dir| will be searched for the dynamic libraries.
 //
 // If multiple initializations are attempted with different |module_dir|s
 // specified then the first one to succeed remains effective for the lifetime
 // of the process.
 //
 // Returns true if everything was successfully initialized, false otherwise.
-bool InitializeMediaLibrary(const FilePath& module_dir);
+MEDIA_EXPORT bool InitializeMediaLibrary(const FilePath& module_dir);
 
 // Helper function for unit tests to avoid boiler plate code everywhere. This
 // function will crash if it fails to load the media library. This ensures tests
 // fail if the media library is not available.
-void InitializeMediaLibraryForTesting();
+MEDIA_EXPORT void InitializeMediaLibraryForTesting();
 
 // Use this if you need to check whether the media library is initialized
 // for the this process, without actually trying to initialize it.
-bool IsMediaLibraryInitialized();
+MEDIA_EXPORT bool IsMediaLibraryInitialized();
 
 // Attempts to initialize OpenMAX library.
 //
 // Returns true if OpenMAX was successfully initialized and loaded.
 bool InitializeOpenMaxLibrary(const FilePath& module_dir);
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_H_