[part 1] Make classes and structures in modules/ fast-allocated.

Source/modules/cachestorage/GlobalCacheStorage.h

Index: Source/modules/cachestorage/GlobalCacheStorage.h
diff --git a/Source/modules/cachestorage/GlobalCacheStorage.h b/Source/modules/cachestorage/GlobalCacheStorage.h
index a00b7b17cbb2a4031400c8993fc499cd7af8f16c..85d8b7ac75ae26c3d14cda4e2622b4923f04a507 100644
--- a/Source/modules/cachestorage/GlobalCacheStorage.h
+++ b/Source/modules/cachestorage/GlobalCacheStorage.h
@@ -5,6 +5,8 @@
 #ifndef GlobalCacheStorage_h
 #define GlobalCacheStorage_h
 
+#include "wtf/Allocator.h"
+
 namespace blink {
 
 class CacheStorage;
@@ -13,6 +15,7 @@ class ExceptionState;
 class WorkerGlobalScope;
 
 class GlobalCacheStorage {
+    STATIC_ONLY(GlobalCacheStorage);
 public:
     static CacheStorage* caches(DOMWindow&, ExceptionState&);
     static CacheStorage* caches(WorkerGlobalScope&, ExceptionState&);