Remove unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp

Index: third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
index 0620e002b75e816b6a19e79fd2e20012f9f04cdf..66afd1f2cf93984b0cbb45e392a32909a0d4182b 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
+++ b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp
@@ -42,7 +42,7 @@
 namespace blink {
 
 // A class holding a pending action.
-class MediaKeys::PendingAction : public GarbageCollectedFinalized<MediaKeys::PendingAction> {
+class MediaKeys::PendingAction final : public GarbageCollected<MediaKeys::PendingAction> {
 public:
     const Persistent<ContentDecryptionModuleResult> result() const
     {
@@ -61,10 +61,6 @@ public:
         return new PendingAction(result, serverCertificate);
     }
 
-    ~PendingAction()
-    {
-    }
-
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_result);