Make classes and structures in core/events and core/fetch fast-allocated.

Source/core/events/PointerIdManager.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PointerIdManager_h
 #define PointerIdManager_h
 
+#include "wtf/Allocator.h"
 #include "wtf/ListHashSet.h"
 
 namespace blink {
 
 /**
   Helper class for tracking the primary pointer id for each type of PointerEvents.
 */
 class PointerIdManager {
+    DISALLOW_ALLOCATION();
 public:
     // TODO(mustaq): Move this enum to PointerEvent.h? Change the spec to use enums?
     enum PointerType {
         PointerTypeUnknown = 0,
         PointerTypeMouse,
         PointerTypePen,
         PointerTypeTouch,
         PointerTypeLastEntry // Must be the last entry in the list
     };
 
     PointerIdManager();
     ~PointerIdManager();
     void clear();
     void add(PointerType, unsigned);
     void remove(PointerType, unsigned);
     bool isPrimary(PointerType, unsigned);
 
 private:
     ListHashSet<unsigned> m_ids[PointerTypeLastEntry];
     bool m_hasPrimaryId[PointerTypeLastEntry];
 };
 
 } // namespace blink
 
 #endif // PointerIdManager_h