Make classes and structures in core/inspector fast-allocated.

Source/core/inspector/RemoteObjectId.h

Index: Source/core/inspector/RemoteObjectId.h
diff --git a/Source/core/inspector/RemoteObjectId.h b/Source/core/inspector/RemoteObjectId.h
index d4b6349bc0a1084e4668bcdfb7e713c5be4273a2..34f47cdda41f21e8ef91167586445c337d7f6d80 100644
--- a/Source/core/inspector/RemoteObjectId.h
+++ b/Source/core/inspector/RemoteObjectId.h
@@ -5,6 +5,7 @@
 #ifndef RemoteObjectId_h
 #define RemoteObjectId_h
 
+#include "wtf/FastAllocBase.h"
 #include "wtf/Forward.h"
 
 namespace blink {
@@ -12,6 +13,7 @@ namespace blink {
 class JSONObject;
 
 class RemoteObjectIdBase {
+    WTF_MAKE_FAST_ALLOCATED(RemoteObjectIdBase);
 public:
     int contextId() const { return m_injectedScriptId; }