Oilpan: move core/fileapi to oilpan's heap.

Source/core/fileapi/Stream.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Stream_h
 #define Stream_h
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
+#include "heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExecutionContext;
 
-class Stream FINAL : public ScriptWrappable, public ActiveDOMObject, public RefCounted<Stream> {
+class Stream FINAL : public RefCountedWillBeRefCountedGarbageCollected<Stream>, public ScriptWrappable, public ActiveDOMObject {

[haraken, 2014/02/24 13:49:14]

Not related to this CL, but we should kill
ActiveDOMObject::{set,unset}PendingActivity at some point. We should replace
them with hasPendingActivity. {set,unset}PendingActivity is manually calling
ref/deref, which is easy to cause memory leaks. If we could kill
{set,unset}PendingActivity, we don't need to use RefCountedGarbageCollected for
ActiveDOMObjects.

[sof, 2014/02/24 17:09:09]

Not doing that bookkeeping correctly was the cause of
https://codereview.chromium.org/174963002/

+    DECLARE_GC_INFO;
 public:
-    static PassRefPtr<Stream> create(ExecutionContext* context, const String& mediaType)
+    static PassRefPtrWillBeRawPtr<Stream> create(ExecutionContext* context, const String& mediaType)
     {
-        RefPtr<Stream> stream = adoptRef(new Stream(context, mediaType));
+        RefPtrWillBeRawPtr<Stream> stream = adoptRefCountedWillBeRefCountedGarbageCollected(new Stream(context, mediaType));
         stream->suspendIfNeeded();
         return stream.release();
     }
 
     virtual ~Stream();
 
     // Returns the internal URL referring to this stream.
     const KURL& url() const { return m_internalURL; }
     // Returns the media type of this stream.
     const String& type() const { return m_mediaType; }
@@ skipping 13 matching lines @@
     void neuter() { m_isNeutered = true; }
     bool isNeutered() const { return m_isNeutered; }
 
     // Implementation of ActiveDOMObject.
     //
     // FIXME: Implement suspend() and resume() when necessary.
     virtual void suspend() OVERRIDE;
     virtual void resume() OVERRIDE;
     virtual void stop() OVERRIDE;
 
+    void trace(Visitor*) { }
+
 protected:
     Stream(ExecutionContext*, const String& mediaType);
 
     // This is an internal URL referring to the blob data associated with this object. It serves
     // as an identifier for this blob. The internal URL is never used to source the blob's content
     // into an HTML or for FileRead'ing, public blob URLs must be used for those purposes.
     KURL m_internalURL;
 
     String m_mediaType;
 
     bool m_isNeutered;
 };
 
 } // namespace WebCore
 
 #endif // Stream_h