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

Source/core/frame/PageScaleConstraintsSet.h

Index: Source/core/frame/PageScaleConstraintsSet.h
diff --git a/Source/core/frame/PageScaleConstraintsSet.h b/Source/core/frame/PageScaleConstraintsSet.h
index 356ea0527ea3f98abfd21c3a5f0944ae73cc3f75..57635d5d9583fa7c654bc08aca3b3b95b7a72fe7 100644
--- a/Source/core/frame/PageScaleConstraintsSet.h
+++ b/Source/core/frame/PageScaleConstraintsSet.h
@@ -36,6 +36,7 @@
 #include "core/frame/PageScaleConstraints.h"
 #include "platform/Length.h"
 #include "platform/geometry/IntSize.h"
+#include "wtf/FastAllocBase.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
@@ -43,6 +44,7 @@ namespace blink {
 // This class harmonizes the viewport (particularly page scale) constraints from
 // the meta viewport tag and other sources.
 class CORE_EXPORT PageScaleConstraintsSet {
+    WTF_MAKE_FAST_ALLOCATED(PageScaleConstraintsSet);
 public:
     static PassOwnPtr<PageScaleConstraintsSet> create()
     {