Move MIDI code to hang off WebFrame.

Source/modules/webmidi/MIDIController.h

Index: Source/modules/webmidi/MIDIController.h
diff --git a/Source/modules/webmidi/MIDIController.h b/Source/modules/webmidi/MIDIController.h
index 5a93bd853403139eda52d640bcdde8514f9c5e33..dcd47516ecad3ffe07b67e9027fd6a8cabaede69 100644
--- a/Source/modules/webmidi/MIDIController.h
+++ b/Source/modules/webmidi/MIDIController.h
@@ -31,7 +31,7 @@
 #ifndef MIDIController_h
 #define MIDIController_h
 
-#include "core/page/Page.h"
+#include "core/frame/LocalFrame.h"
 #include "platform/heap/Handle.h"
 
 namespace WebCore {
@@ -39,7 +39,7 @@ namespace WebCore {
 class MIDIAccess;
 class MIDIClient;
 
-class MIDIController FINAL : public NoBaseWillBeGarbageCollectedFinalized<MIDIController>, public WillBeHeapSupplement<Page> {
+class MIDIController FINAL : public NoBaseWillBeGarbageCollectedFinalized<MIDIController>, public WillBeHeapSupplement<LocalFrame> {

[jam, 2014/06/06 18:23:52]

not sure if I need to remove all the oilpan stuff in this class because
LocalFrame isn't using oilpan while Page is?

[sof, 2014/06/06 19:32:55]

That's right (for now.) Consequently, simplify this to:

   class MIDIController FINAL : public Supplement<LocalFrame> { ... }

     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MIDIController);
 public:
     virtual ~MIDIController();
@@ -49,9 +49,9 @@ public:
 
     static PassOwnPtrWillBeRawPtr<MIDIController> create(PassOwnPtr<MIDIClient>);
     static const char* supplementName();
-    static MIDIController* from(Page* page) { return static_cast<MIDIController*>(WillBeHeapSupplement<Page>::from(page, supplementName())); }
+    static MIDIController* from(LocalFrame* frame) { return static_cast<MIDIController*>(WillBeHeapSupplement<LocalFrame>::from(frame, supplementName())); }

[sof, 2014/06/06 19:32:55]

s/WillBeHeapSupplement/Supplement/

 
-    virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<Page>::trace(visitor); }
+    virtual void trace(Visitor* visitor) OVERRIDE { WillBeHeapSupplement<LocalFrame>::trace(visitor); }

[sof, 2014/06/06 19:32:55]

You can remove this trace() OVERRIDE.

 
 protected:
     explicit MIDIController(PassOwnPtr<MIDIClient>);