Oilpan: move Screen and its supplement to the oilpan heap.

Source/modules/screen_orientation/ScreenOrientation.h

Index: Source/modules/screen_orientation/ScreenOrientation.h
diff --git a/Source/modules/screen_orientation/ScreenOrientation.h b/Source/modules/screen_orientation/ScreenOrientation.h
index ff5a85f657c4f7ed402d025143a03af0ac38f008..c8ba48bc810c09e309af56ad7a42a772510b453a 100644
--- a/Source/modules/screen_orientation/ScreenOrientation.h
+++ b/Source/modules/screen_orientation/ScreenOrientation.h
@@ -7,6 +7,7 @@
 
 #include "core/events/EventTarget.h"
 #include "core/frame/DOMWindowProperty.h"
+#include "heap/Handle.h"
 #include "platform/Supplementable.h"
 #include "platform/Timer.h"
 #include "public/platform/WebScreenOrientation.h"
@@ -19,7 +20,8 @@ namespace WebCore {
 class Document;
 class Screen;
 
-class ScreenOrientation FINAL : public Supplement<Screen>, DOMWindowProperty {
+class ScreenOrientation FINAL : public NoBaseWillBeGarbageCollectedFinalized<ScreenOrientation>, public WillBeHeapSupplement<Screen>, DOMWindowProperty {
+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ScreenOrientation);
 public:
     static ScreenOrientation& from(Screen&);
     virtual ~ScreenOrientation();
@@ -31,6 +33,8 @@ public:
     static bool lockOrientation(Screen&, const AtomicString& orientation);
     static void unlockOrientation(Screen&);
 
+    virtual void trace(Visitor*) { }

[haraken, 2014/03/14 11:39:45]

Don't you need to trace WillBeHeapSupplement::trace() ?

[zerny-chromium, 2014/03/14 11:54:48]

Yes. I missed that one. The ToT plugin should catch this one (trying out a local
build now)

[sof, 2014/03/14 12:01:31]

Why? Isn't that the method that's implemented here?

+
 private:
     explicit ScreenOrientation(Screen&);