Make platform/text to use USING_FAST_MALLOC.

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

 /*
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef SegmentedString_h
 #define SegmentedString_h
 
 #include "platform/PlatformExport.h"
+#include "wtf/Allocator.h"
 #include "wtf/Deque.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/TextPosition.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class SegmentedString;
 
 class PLATFORM_EXPORT SegmentedSubstring {
+    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
 public:
     SegmentedSubstring()
         : m_length(0)
         , m_doNotExcludeLineNumbers(true)
         , m_is8Bit(false)
     {
         m_data.string16Ptr = 0;
     }
 
     SegmentedSubstring(const String& str)
@@ skipping 124 matching lines @@
         const LChar* string8Ptr;
         const UChar* string16Ptr;
     } m_data;
     int m_length;
     bool m_doNotExcludeLineNumbers;
     bool m_is8Bit;
     String m_string;
 };
 
 class PLATFORM_EXPORT SegmentedString {
+    DISALLOW_NEW();
 public:
     SegmentedString()
         : m_currentChar(0)
         , m_numberOfCharactersConsumedPriorToCurrentString(0)
         , m_numberOfCharactersConsumedPriorToCurrentLine(0)
         , m_currentLine(0)
         , m_closed(false)
         , m_empty(true)
         , m_fastPathFlags(NoFastPath)
         , m_advanceFunc(&SegmentedString::advanceEmpty)
@@ skipping 223 matching lines @@
     bool m_closed;
     bool m_empty;
     unsigned char m_fastPathFlags;
     void (SegmentedString::*m_advanceFunc)();
     void (SegmentedString::*m_advanceAndUpdateLineNumberFunc)();
 };
 
 }
 
 #endif