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

Source/core/fileapi/Stream.h

Index: Source/core/fileapi/Stream.h
diff --git a/Source/core/fileapi/Stream.h b/Source/core/fileapi/Stream.h
index d3287ba1ff261d36466e52c4e3173418e9d81479..5426ee97afa2fda89797e6e6b8ebdba1e86dc6fe 100644
--- a/Source/core/fileapi/Stream.h
+++ b/Source/core/fileapi/Stream.h
@@ -33,6 +33,7 @@
 
 #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"
@@ -42,11 +43,12 @@ 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();
     }
@@ -80,6 +82,8 @@ public:
     virtual void resume() OVERRIDE;
     virtual void stop() OVERRIDE;
 
+    void trace(Visitor*) { }
+
 protected:
     Stream(ExecutionContext*, const String& mediaType);