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

Source/core/html/shadow/DateTimeNumericFieldElement.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #ifndef DateTimeNumericFieldElement_h
 #define DateTimeNumericFieldElement_h
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 #include "core/html/shadow/DateTimeFieldElement.h"
 
+#include "wtf/Allocator.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 // DateTimeNumericFieldElement represents numeric field of date time format,
 // such as:
 //  - hour
 //  - minute
 //  - millisecond
 //  - second
 //  - year
 class DateTimeNumericFieldElement : public DateTimeFieldElement {
     WTF_MAKE_NONCOPYABLE(DateTimeNumericFieldElement);
 
 public:
     struct Step {
+        DISALLOW_ALLOCATION();
         Step(int step = 1, int stepBase = 0) : step(step), stepBase(stepBase) { }
         int step;
         int stepBase;
     };
 
     struct Range {
+        DISALLOW_ALLOCATION();
         Range(int minimum, int maximum) : minimum(minimum), maximum(maximum) { }
         int clampValue(int) const;
         bool isInRange(int) const;
         bool isSingleton() const { return minimum == maximum; }
 
         int minimum;
         int maximum;
     };
 
 protected:
@@ skipping 35 matching lines @@
     const Step m_step;
     int m_value;
     bool m_hasValue;
     mutable StringBuilder m_typeAheadBuffer;
 };
 
 } // namespace blink
 
 #endif
 #endif