Remove dangerous std::string constructor for der::Input

net/der/input.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string.h>
 
 #include "base/logging.h"
 #include "net/der/input.h"
 
 namespace net {
 
 namespace der {
 
 Input::Input() : data_(nullptr), len_(0) {
 }
 
 Input::Input(const uint8_t* data, size_t len) : data_(data), len_(len) {
 }
 
-Input::Input(const std::string& s)
-    : data_(reinterpret_cast<const uint8_t*>(s.data())), len_(s.size()) {
-}
-
 bool Input::Equals(const Input& other) const {
   if (len_ != other.len_)
     return false;
   return memcmp(data_, other.data_, len_) == 0;
 }
 
 ByteReader::ByteReader(const Input& in)
     : data_(in.UnsafeData()), len_(in.Length()) {
 }
 
@@ skipping 57 matching lines @@
 
 Mark::Mark(const uint8_t* ptr) : ptr_(ptr) {
 }
 
 Mark::Mark() : ptr_(nullptr) {
 }
 
 }  // namespace der
 
 }  // namespace net