Adding allocator annotations to blink classes and structs.

Source/bindings/core/v8/WindowProxy.h

Index: Source/bindings/core/v8/WindowProxy.h
diff --git a/Source/bindings/core/v8/WindowProxy.h b/Source/bindings/core/v8/WindowProxy.h
index 14c6dd9a955a5f32e0f2bb2e01354584ee8f2858..6c6368e52e36a139cd5dc9565d69f61e4a4847d0 100644
--- a/Source/bindings/core/v8/WindowProxy.h
+++ b/Source/bindings/core/v8/WindowProxy.h
@@ -51,6 +51,7 @@ class SecurityOrigin;
 // WindowProxy represents all the per-global object state for a Frame that
 // persist between navigations.
 class WindowProxy final : public NoBaseWillBeGarbageCollectedFinalized<WindowProxy> {
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(WindowProxy);
 public:
     static PassOwnPtrWillBeRawPtr<WindowProxy> create(v8::Isolate*, Frame*, DOMWrapperWorld&);