[reland] SegmentedString::push() should always push a char in front

Source/core/html/parser/HTMLEntityParser.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2010 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * 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 HTMLEntityParser_h
 #define HTMLEntityParser_h
 
+#include "core/CoreExport.h"
 #include "platform/text/SegmentedString.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
 class DecodedHTMLEntity {
     STACK_ALLOCATED();
 private:
     // HTML entities contain at most four UTF-16 code units.
     static const unsigned kMaxLength = 4;
@@ skipping 16 matching lines @@
             return;
         }
         append(U16_LEAD(c));
         append(U16_TRAIL(c));
     }
 
     unsigned length;
     UChar data[kMaxLength];
 };
 
-bool consumeHTMLEntity(SegmentedString&, DecodedHTMLEntity& decodedEntity, bool& notEnoughCharacters, UChar additionalAllowedCharacter = '\0');
+CORE_EXPORT bool consumeHTMLEntity(SegmentedString&, DecodedHTMLEntity& decodedEntity, bool& notEnoughCharacters, UChar additionalAllowedCharacter = '\0');
 
 // Used by the XML parser.  Not suitable for use in HTML parsing.  Use consumeHTMLEntity instead.
 size_t decodeNamedEntityToUCharArray(const char*, UChar result[4]);
 
-}
+} // namespace blink
 
 #endif