Oilpan: Enable Oilpan by default in modules/encryptedmedia

Source/modules/encryptedmedia/MediaKeys.h

Index: Source/modules/encryptedmedia/MediaKeys.h
diff --git a/Source/modules/encryptedmedia/MediaKeys.h b/Source/modules/encryptedmedia/MediaKeys.h
index c1ef548c382a04c1e57cd3be8d4f978bb42d1ce7..6d2e0560f499be493108ae3cd97dcb2d546289fb 100644
--- a/Source/modules/encryptedmedia/MediaKeys.h
+++ b/Source/modules/encryptedmedia/MediaKeys.h
@@ -52,14 +52,14 @@ class ExceptionState;
 
 // References are held by JS and HTMLMediaElement.
 // The WebContentDecryptionModule has the same lifetime as this object.
-class MediaKeys : public RefCountedWillBeGarbageCollectedFinalized<MediaKeys>, public ContextLifecycleObserver, public ScriptWrappable {
+class MediaKeys : public GarbageCollectedFinalized<MediaKeys>, public ContextLifecycleObserver, public ScriptWrappable {
 public:
-    static PassRefPtrWillBeRawPtr<MediaKeys> create(ExecutionContext*, const String& keySystem, ExceptionState&);
+    static MediaKeys* create(ExecutionContext*, const String& keySystem, ExceptionState&);
     ~MediaKeys();
 
     const String& keySystem() const { return m_keySystem; }
 
-    PassRefPtrWillBeRawPtr<MediaKeySession> createSession(ExecutionContext*, const String& contentType, Uint8Array* initData, ExceptionState&);
+    MediaKeySession* createSession(ExecutionContext*, const String& contentType, Uint8Array* initData, ExceptionState&);
 
     static bool isTypeSupported(const String& keySystem, const String& contentType);
 
@@ -84,14 +84,14 @@ protected:
     struct InitializeNewSessionData {
         ALLOW_ONLY_INLINE_ALLOCATION();
     public:
-        InitializeNewSessionData(PassRefPtrWillBeRawPtr<MediaKeySession> session, const String& contentType, PassRefPtr<Uint8Array> initData)
+        InitializeNewSessionData(MediaKeySession* session, const String& contentType, PassRefPtr<Uint8Array> initData)
             : session(session)
             , contentType(contentType)
             , initData(initData) { }
 
         void trace(Visitor*);
 
-        RefPtrWillBeMember<MediaKeySession> session;
+        Member<MediaKeySession> session;
         String contentType;
         RefPtr<Uint8Array> initData;
     };