Implement StringUTF8Adaptor::asStringPiece.

third_party/WebKit/Source/wtf/text/StringUTF8Adaptor.h

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * 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 StringUTF8Adaptor_h
 #define StringUTF8Adaptor_h
 
+#include "base/strings/string_piece.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/TextEncoding.h"
 #include "wtf/text/WTFString.h"
 
 namespace WTF {
 
 // This class lets you get UTF-8 data out of a String without mallocing a
 // separate buffer to hold the data if the String happens to be 8 bit and
 // contain only ASCII characters.
 class StringUTF8Adaptor {
@@ skipping 14 matching lines @@
         } else {
             m_utf8Buffer = string.utf8();
             m_data = m_utf8Buffer.data();
             m_length = m_utf8Buffer.length();
         }
     }
 
     const char* data() const { return m_data; }
     size_t length() const { return m_length; }
 
+    base::StringPiece asStringPiece() const { return base::StringPiece(m_data, m_length); }
+
 private:
     CString m_utf8Buffer;
     const char* m_data;
     size_t m_length;
 };
 
 } // namespace WTF
 
 using WTF::StringUTF8Adaptor;
 
 #endif // StringUTF8Adaptor_h