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

Source/modules/app_banner/AppBannerCallbacks.h

Index: Source/modules/app_banner/AppBannerCallbacks.h
diff --git a/Source/modules/app_banner/AppBannerCallbacks.h b/Source/modules/app_banner/AppBannerCallbacks.h
index a4a3baa75aaebafd21083980632500ed41b94681..a0591a37817387d8543b63b4815c11128c955269 100644
--- a/Source/modules/app_banner/AppBannerCallbacks.h
+++ b/Source/modules/app_banner/AppBannerCallbacks.h
@@ -11,6 +11,9 @@
 namespace blink {
 
 class AppBannerCallbacks : public WebAppBannerCallbacks {
+    // FIXME(tasak): when making public/platform classes to use PartitionAlloc,
+    // the following macro should be moved to WebCallbacks defined in public/platformWebCallbacks.h.
+    WTF_MAKE_FAST_ALLOCATED(AppBannerCallbacks);
 public:
     explicit AppBannerCallbacks(UserChoiceProperty*);
     ~AppBannerCallbacks() override = default;