[part 2] Make classes and structures in modules fast-allocated.

Source/modules/vibration/testing/InternalsVibration.h

Index: Source/modules/vibration/testing/InternalsVibration.h
diff --git a/Source/modules/vibration/testing/InternalsVibration.h b/Source/modules/vibration/testing/InternalsVibration.h
index c39dc81f4128649018359c274d032ed7861830fa..307e2489e996d6d85daa747961be60380a4e9824 100644
--- a/Source/modules/vibration/testing/InternalsVibration.h
+++ b/Source/modules/vibration/testing/InternalsVibration.h
@@ -31,6 +31,7 @@
 #ifndef InternalsVibration_h
 #define InternalsVibration_h
 
+#include "wtf/Allocator.h"
 #include "wtf/Vector.h"
 
 namespace blink {
@@ -39,6 +40,7 @@ class Document;
 class Internals;
 
 class InternalsVibration {
+    STATIC_ONLY(InternalsVibration);
 public:
     static bool isVibrating(Internals&, Document*);
     static Vector<unsigned> pendingVibrationPattern(Internals&, Document*);