Oilpan: fix build after r199375.

Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h

Index: Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h
diff --git a/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h b/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h
index 841c163006b88b54e0306f4045e8179fce01143d..b4e453249a4e623e862a0eb1c7d6322737d6f3fe 100644
--- a/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h
+++ b/Source/modules/encryptedmedia/HTMLMediaElementEncryptedMedia.h
@@ -24,9 +24,8 @@ class ScriptState;
 class WebContentDecryptionModule;
 class WebMediaPlayer;
 
-class MODULES_EXPORT HTMLMediaElementEncryptedMedia final : public NoBaseWillBeGarbageCollected<HTMLMediaElementEncryptedMedia>, public WillBeHeapSupplement<HTMLMediaElement>, public WebMediaPlayerEncryptedMediaClient {
+class MODULES_EXPORT HTMLMediaElementEncryptedMedia final : public NoBaseWillBeGarbageCollectedFinalized<HTMLMediaElementEncryptedMedia>, public WillBeHeapSupplement<HTMLMediaElement>, public WebMediaPlayerEncryptedMediaClient {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLMediaElementEncryptedMedia);
-    DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(HTMLMediaElementEncryptedMedia);
 public:
     // encrypted media extensions (v0.1b)
     static void webkitGenerateKeyRequest(HTMLMediaElement&, const String& keySystem, PassRefPtr<DOMUint8Array> initData, ExceptionState&);
@@ -57,6 +56,8 @@ public:
     static HTMLMediaElementEncryptedMedia& from(HTMLMediaElement&);
     static const char* supplementName();
 
+    ~HTMLMediaElementEncryptedMedia();
+
     DECLARE_VIRTUAL_TRACE();
 
 private: