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

Source/core/html/track/AutomaticTrackSelection.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 AutomaticTrackSelection_h
 #define AutomaticTrackSelection_h
 
 #include "core/html/track/TextTrackKindUserPreference.h"
 #include "platform/heap/Handle.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class TextTrackList;
 class TrackGroup;
 
 class AutomaticTrackSelection {
     STACK_ALLOCATED();
 public:
     struct Configuration {
+        DISALLOW_ALLOCATION();
         Configuration()
             : disableCurrentlyEnabledTracks(false)
             , forceEnableSubtitleOrCaptionTrack(false)
             , textTrackKindUserPreference(TextTrackKindUserPreference::Default) { }
 
         bool disableCurrentlyEnabledTracks;
         bool forceEnableSubtitleOrCaptionTrack;
         TextTrackKindUserPreference textTrackKindUserPreference;
     };
 
     AutomaticTrackSelection(const Configuration&);
 
     void perform(TextTrackList&);
 
 private:
     void performAutomaticTextTrackSelection(const TrackGroup&);
     void enableDefaultMetadataTextTracks(const TrackGroup&);
     const AtomicString& preferredTrackKind() const;
 
     const Configuration m_configuration;
 };
 
 } // namespace blink
 
 #endif // AutomaticTrackSelection_h