Add missing macros includes in media/.

media/blink/webcontentdecryptionmodulesession_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_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 #define MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
+#include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "media/base/media_keys.h"
 #include "media/blink/new_session_cdm_result_promise.h"
 #include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 
 namespace media {
 
@@ skipping 59 matching lines @@
   // creating a promise in case this class disappears before the promise
   // actually fires.
   base::WeakPtrFactory<WebContentDecryptionModuleSessionImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentDecryptionModuleSessionImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBCONTENTDECRYPTIONMODULESESSION_IMPL_H_