Add a SetDoNotFragment() method to DatagramSocket, and call this for

net/socket/ssl_client_socket_unittest.cc

 // Copyright (c) 2012 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 "net/socket/ssl_client_socket.h"
 
 #include <errno.h>
 #include <string.h>
 
 #include <utility>
@@ skipping 126 matching lines @@
             int buf_len,
             const CompletionCallback& callback) override {
     return transport_->Write(buf, buf_len, callback);
   }
   int SetReceiveBufferSize(int32_t size) override {
     return transport_->SetReceiveBufferSize(size);
   }
   int SetSendBufferSize(int32_t size) override {
     return transport_->SetSendBufferSize(size);
   }
+  int SetDoNotFragment(bool do_not_fragment) override {
+    return transport_->SetDoNotFragment(do_not_fragment);
+  }
 
  protected:
   std::unique_ptr<StreamSocket> transport_;
 };
 
 // ReadBufferingStreamSocket is a wrapper for an existing StreamSocket that
 // will ensure a certain amount of data is internally buffered before
 // satisfying a Read() request. It exists to mimic OS-level internal
 // buffering, but in a way to guarantee that X number of bytes will be
 // returned to callers of Read(), regardless of how quickly the OS receives
@@ skipping 3261 matching lines @@
   ASSERT_TRUE(sock_->GetSSLInfo(&ssl_info));
 
   EXPECT_THAT(rv, IsError(ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN));
   EXPECT_TRUE(ssl_info.cert_status & CERT_STATUS_PINNED_KEY_MISSING);
   EXPECT_TRUE(ssl_info.cert_status &
               CERT_STATUS_CERTIFICATE_TRANSPARENCY_REQUIRED);
   EXPECT_TRUE(sock_->IsConnected());
 }
 
 }  // namespace net