Delete rtc::linked_ptr. Only use, in statstypes.h, replaced bu std::unique_ptr.

webrtc/base/cryptstring.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef _WEBRTC_BASE_CRYPTSTRING_H_
 #define _WEBRTC_BASE_CRYPTSTRING_H_
 
 #include <string.h>
 
 #include <memory>
 #include <string>
 #include <vector>
 
-#include "webrtc/base/linked_ptr.h"
-
 namespace rtc {
 
 class CryptStringImpl {
 public:
   virtual ~CryptStringImpl() {}
   virtual size_t GetLength() const = 0;
   virtual void CopyTo(char * dest, bool nullterminate) const = 0;
   virtual std::string UrlEncode() const = 0;
   virtual CryptStringImpl * Copy() const = 0;
   virtual void CopyRawTo(std::vector<unsigned char> * dest) const = 0;
@@ skipping 128 matching lines @@
   CryptStringImpl* Copy() const override;
   void CopyRawTo(std::vector<unsigned char>* dest) const override;
 
  private:
   std::string password_;
 };
 
 }
 
 #endif  // _WEBRTC_BASE_CRYPTSTRING_H_