Make blink classes and structures in core/css fast-allocated

Source/core/css/FontFaceSet.h

Index: Source/core/css/FontFaceSet.h
diff --git a/Source/core/css/FontFaceSet.h b/Source/core/css/FontFaceSet.h
index f1ae0227e3b70b0d3fb1ca6def3037e0f22b7882..ec969bf5e0a564d990c14a773e4039f85949441a 100644
--- a/Source/core/css/FontFaceSet.h
+++ b/Source/core/css/FontFaceSet.h
@@ -34,6 +34,7 @@
 #include "core/events/EventTarget.h"
 #include "platform/AsyncMethodRunner.h"
 #include "platform/RefCountedSupplement.h"
+#include "wtf/Allocator.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
@@ -117,6 +118,7 @@ private:
     }
 
     class FontLoadHistogram {
+        DISALLOW_ALLOCATION();
     public:
         enum Status { NoWebFonts, HadBlankText, DidNotHaveBlankText, Reported };
         FontLoadHistogram() : m_status(NoWebFonts), m_count(0), m_recorded(false) { }