Move ENABLE_PEPPER_CDMS to a buildflag header.

media/base/key_systems.h

 // Copyright 2013 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_KEY_SYSTEMS_H_
 #define MEDIA_BASE_KEY_SYSTEMS_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "media/base/eme_constants.h"
 #include "media/base/media_export.h"
+#include "ppapi/features/features.h"
 
 namespace media {
 
 // Provides an interface for querying registered key systems.
 //
 // Many of the original static methods are still available, they should be
 // migrated into this interface over time (or removed).
 //
 // TODO(sandersd): Provide GetKeySystem() so that it is not necessary to pass
 // |key_system| to every method. http://crbug.com/457438
@@ skipping 50 matching lines @@
 MEDIA_EXPORT bool IsSupportedKeySystemWithInitDataType(
     const std::string& key_system,
     EmeInitDataType init_data_type);
 
 // Returns a name for |key_system| suitable to UMA logging.
 MEDIA_EXPORT std::string GetKeySystemNameForUMA(const std::string& key_system);
 
 // Returns whether AesDecryptor can be used for the given |key_system|.
 MEDIA_EXPORT bool CanUseAesDecryptor(const std::string& key_system);
 
-#if defined(ENABLE_PEPPER_CDMS)
+#if BUILDFLAG(ENABLE_PEPPER_CDMS)
 // Returns the Pepper MIME type for |key_system|.
 // Returns empty string if |key_system| is unknown or not Pepper-based.
 MEDIA_EXPORT std::string GetPepperType(const std::string& key_system);
 #endif
 
 #if defined(UNIT_TEST)
 // Helper functions to add container/codec types for testing purposes.
 // Call AddCodecMask() first to ensure the mask values passed to
 // AddMimeTypeCodecMask() already exist.
 MEDIA_EXPORT void AddCodecMask(EmeMediaType media_type,
                                const std::string& codec,
                                uint32_t mask);
 MEDIA_EXPORT void AddMimeTypeCodecMask(const std::string& mime_type,
                                        uint32_t mask);
 #endif  // defined(UNIT_TEST)
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_KEY_SYSTEMS_H_