Rename TLS error assistant to SSL error assistant

chrome/browser/ssl/tls_error_assistant.proto

-// Copyright 2016 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.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-
-package chrome_browser_ssl;
-
-message CaptivePortalCert {
-  // Sha256 hash of the certificate's public key. The fingerprint is prefixed
-  // with "sha256/" and encoded in base64 (same format as
-  // src/net/http/transport_security_state_static.pins)
-  // Example: sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
-  optional string sha256_hash = 1;
-}
-
-message TLSErrorAssistantConfig {
-  optional uint32 version_id = 1;
-  repeated CaptivePortalCert captive_portal_cert = 2;
-}