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

Source/core/editing/iterators/SearchBuffer.h

 /*
  * Copyright (C) 2004, 2006, 2009 Apple 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 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SearchBuffer_h
 #define SearchBuffer_h
 
 #include "core/CoreExport.h"
 #include "core/editing/EphemeralRange.h"
 #include "core/editing/FindOptions.h"
+#include "wtf/Allocator.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 // Buffer that knows how to compare with a search target.
 // Keeps enough of the previous text to be able to search in the future, but no
 // more. Non-breaking spaces are always equal to normal spaces. Case folding is
 // also done if the CaseInsensitive option is specified. Matches are further
 // filtered if the AtWordStarts option is specified, although some matches
 // inside a word are permitted if TreatMedialCapitalAsWordStart is specified as
 // well.
 class SearchBuffer {
+    STACK_ALLOCATED();
     WTF_MAKE_NONCOPYABLE(SearchBuffer);
 public:
     SearchBuffer(const String& target, FindOptions);
     ~SearchBuffer();
 
     // Returns number of characters appended; guaranteed to be in the range
     // [1, length].
     template<typename CharType>
     void append(const CharType*, size_t length);
     size_t numberOfCharactersJustAppended() const { return m_numberOfCharactersJustAppended; }
@@ skipping 26 matching lines @@
     Vector<UChar> m_normalizedTarget;
     mutable Vector<UChar> m_normalizedMatch;
 };
 
 CORE_EXPORT EphemeralRange findPlainText(const EphemeralRange& inputRange, const String&, FindOptions);
 CORE_EXPORT EphemeralRangeInComposedTree findPlainText(const EphemeralRangeInComposedTree& inputRange, const String&, FindOptions);
 
 } // namespace blink
 
 #endif // SearchBuffer_h