Don't lazy allocate the AtomicStringTable.

third_party/WebKit/Source/wtf/text/AtomicStringTable.h

+// Copyright 2016 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 WTF_AtomicStringTable_h
+#define WTF_AtomicStringTable_h
+
+#include "wtf/Allocator.h"
+#include "wtf/HashSet.h"
+#include "wtf/text/StringHash.h"
+#include "wtf/text/StringImpl.h"
+
+namespace WTF {
+
+// The underlying storage that keeps the map of unique AtomicStrings. This is
+// not thread safe and each WTFThreadData has one.
+class AtomicStringTable {
+    USING_FAST_MALLOC(AtomicStringTable);
+    WTF_MAKE_NONCOPYABLE(AtomicStringTable);
+public:
+    AtomicStringTable();
+    ~AtomicStringTable();
+
+    StringImpl* addStringImpl(StringImpl*);
+
+    HashSet<StringImpl*>& table() { return m_table; }
+
+private:
+    HashSet<StringImpl*> m_table;
+};
+
+} // namespace WTF
+
+#endif