HeapSupplements are now just Supplements.

third_party/WebKit/Source/modules/webmidi/MIDIController.h

Index: third_party/WebKit/Source/modules/webmidi/MIDIController.h
diff --git a/third_party/WebKit/Source/modules/webmidi/MIDIController.h b/third_party/WebKit/Source/modules/webmidi/MIDIController.h
index d1980c07d61d0c5625cb68ae9422b2362f681eff..5e3b7d0524bfc92a27e1318fbecec66f4b31d99c 100644
--- a/third_party/WebKit/Source/modules/webmidi/MIDIController.h
+++ b/third_party/WebKit/Source/modules/webmidi/MIDIController.h
@@ -40,7 +40,7 @@ class MIDIAccessInitializer;
 class MIDIClient;
 class MIDIOptions;
 
-class MIDIController final : public GarbageCollectedFinalized<MIDIController>, public HeapSupplement<LocalFrame> {
+class MIDIController final : public GarbageCollectedFinalized<MIDIController>, public Supplement<LocalFrame> {
     USING_GARBAGE_COLLECTED_MIXIN(MIDIController);
 public:
     virtual ~MIDIController();
@@ -50,9 +50,9 @@ public:
 
     static RawPtr<MIDIController> create(PassOwnPtr<MIDIClient>);
     static const char* supplementName();
-    static MIDIController* from(LocalFrame* frame) { return static_cast<MIDIController*>(HeapSupplement<LocalFrame>::from(frame, supplementName())); }
+    static MIDIController* from(LocalFrame* frame) { return static_cast<MIDIController*>(Supplement<LocalFrame>::from(frame, supplementName())); }
 
-    DEFINE_INLINE_VIRTUAL_TRACE() { HeapSupplement<LocalFrame>::trace(visitor); }
+    DEFINE_INLINE_VIRTUAL_TRACE() { Supplement<LocalFrame>::trace(visitor); }
 
 protected:
     explicit MIDIController(PassOwnPtr<MIDIClient>);