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

Source/core/html/parser/HTMLSourceTracker.h

Index: Source/core/html/parser/HTMLSourceTracker.h
diff --git a/Source/core/html/parser/HTMLSourceTracker.h b/Source/core/html/parser/HTMLSourceTracker.h
index e94e4dd26a7c5c18c75fd140e52865591951f5b7..5f4d3692410429cc59fd81f5c6f16910e7f04877 100644
--- a/Source/core/html/parser/HTMLSourceTracker.h
+++ b/Source/core/html/parser/HTMLSourceTracker.h
@@ -28,12 +28,14 @@
 
 #include "core/html/parser/HTMLToken.h"
 #include "platform/text/SegmentedString.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class HTMLTokenizer;
 
 class HTMLSourceTracker {
+    DISALLOW_ALLOCATION();
     WTF_MAKE_NONCOPYABLE(HTMLSourceTracker);
 public:
     HTMLSourceTracker();