Oilpan: fix build after r186803.

Source/modules/encryptedmedia/EncryptedMediaRequest.h

Index: Source/modules/encryptedmedia/EncryptedMediaRequest.h
diff --git a/Source/modules/encryptedmedia/EncryptedMediaRequest.h b/Source/modules/encryptedmedia/EncryptedMediaRequest.h
index 2b83e304f606b8987a00a0673ca291ae1d210a3d..15628adf224bbd5e291c6b14569cc9e67f252462 100644
--- a/Source/modules/encryptedmedia/EncryptedMediaRequest.h
+++ b/Source/modules/encryptedmedia/EncryptedMediaRequest.h
@@ -5,7 +5,7 @@
 #ifndef EncryptedMediaRequest_h
 #define EncryptedMediaRequest_h
 
-#include "platform/heap/Heap.h"
+#include "platform/heap/Handle.h"
 
 namespace blink {
 
@@ -15,7 +15,7 @@ struct WebMediaKeySystemConfiguration;
 class WebString;
 template <typename T> class WebVector;
 
-class EncryptedMediaRequest : public RefCountedGarbageCollected<EncryptedMediaRequest> {
+class EncryptedMediaRequest : public GarbageCollectedFinalized<EncryptedMediaRequest> {
 public:
     virtual ~EncryptedMediaRequest() { }