Make platform/text to use USING_FAST_MALLOC.

third_party/WebKit/Source/platform/text/DecodeEscapeSequences.h

 /*
  * Copyright (C) 2011 Daniel Bates (dbates@intudata.com). All Rights Reserved.
  * Copyright (c) 2012 Google, 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
@@ skipping 13 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 DecodeEscapeSequences_h
 #define DecodeEscapeSequences_h
 
 #include "wtf/ASCIICType.h"
+#include "wtf/Allocator.h"
 #include "wtf/Assertions.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextEncoding.h"
 
 namespace blink {
 
 // See <http://en.wikipedia.org/wiki/Percent-encoding#Non-standard_implementations>.
 struct Unicode16BitEscapeSequence {
+    STATIC_ONLY(Unicode16BitEscapeSequence);
     enum { sequenceSize = 6 }; // e.g. %u26C4
     static size_t findInString(const String& string, size_t startPosition) { return string.find("%u", startPosition); }
     static size_t findEndOfRun(const String& string, size_t startPosition, size_t endPosition)
     {
         size_t runEnd = startPosition;
         while (endPosition - runEnd >= sequenceSize && string[runEnd] == '%' && string[runEnd + 1] == 'u'
                && isASCIIHexDigit(string[runEnd + 2]) && isASCIIHexDigit(string[runEnd + 3])
                && isASCIIHexDigit(string[runEnd + 4]) && isASCIIHexDigit(string[runEnd + 5])) {
             runEnd += sequenceSize;
         }
@@ skipping 97 matching lines @@
         result.append(decoded);
         decodedPosition = encodedRunEnd;
     }
     result.append(string, decodedPosition, length - decodedPosition);
     return result.toString();
 }
 
 } // namespace blink
 
 #endif // DecodeEscapeSequences_h