Revert of Move ENABLE_PEPPER_CDMS to a buildflag header.

media/blink/webcontentdecryptionmodule_impl.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_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
 #define MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "media/blink/media_blink_export.h"
-#include "ppapi/features/features.h"
 #include "third_party/WebKit/public/platform/WebContentDecryptionModule.h"
 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleResult.h"
 
 namespace blink {
-#if BUILDFLAG(ENABLE_PEPPER_CDMS)
+#if defined(ENABLE_PEPPER_CDMS)
 class WebLocalFrame;
 #endif
 class WebSecurityOrigin;
 }
 
 namespace media {
 
 struct CdmConfig;
 class CdmFactory;
 class CdmSessionAdapter;
@@ skipping 36 matching lines @@
 
 // Allow typecasting from blink type as this is the only implementation.
 inline WebContentDecryptionModuleImpl* ToWebContentDecryptionModuleImpl(
     blink::WebContentDecryptionModule* cdm) {
   return static_cast<WebContentDecryptionModuleImpl*>(cdm);
 }
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULE_IMPL_H_