Revert of Add ClientConfig proto, and JSON generation/parsing.

components/data_reduction_proxy/proto/client_config.proto

-// 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.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-
-package data_reduction_proxy;
-
-// The client configuration information for using the Data Saver service.
-message ClientConfig {
-  // An opaque per-session key assigned by the server which permits use of the
-  // Data Saver HTTP proxy servers.
-  optional string session_key = 1;
-  // The time at which the secure_session_key is no longer valid. This is
-  // enforced by the Data Saver service, and is provided to permit the client
-  // to request a new session key prior to expiration.
-  optional Timestamp expire_time = 2;
-  // The DataSaver proxy configuration that is valid for the session.
-  optional ProxyConfig proxy_config = 3;
-}
-
-// A Timestamp represents a point in time independent of any time zone
-// or calendar, represented as seconds and fractions of seconds at
-// nanosecond resolution in UTC Epoch time.
-message Timestamp {
-  // Represents seconds of UTC time since Unix epoch
-  // 1970-01-01T00:00:00Z. Must be from from 0001-01-01T00:00:00Z to
-  // 9999-12-31T23:59:59Z inclusive.
-  optional int64 seconds = 1;
-
-  // Non-negative fractions of a second at nanosecond resolution. Negative
-  // second values with fractions must still have non-negative nanos values
-  // that count forward in time. Must be from 0 to 999,999,999
-  // inclusive.
-  optional int32 nanos = 2;
-}
-
-// Data Saver proxy configuration.
-message ProxyConfig {
-  // Provides proxy server information for HTTP URIs.
-  repeated ProxyServer http_proxy_servers = 1;
-}
-
-// Configuration information for a specific proxy server.
-message ProxyServer {
-  // The scheme of the proxy server.
-  enum ProxyScheme {
-    // The proxy scheme is unspecified.
-    UNSPECIFIED = 0;
-    // HTTP
-    HTTP = 1;
-    // HTTPS
-    HTTPS = 2;
-    // HTTPS over QUIC
-    QUIC = 3;
-  }
-
-  // The scheme for the proxy server.
-  optional ProxyScheme scheme = 1;
-  // The host name for the proxy server.
-  optional string host = 2;
-  // The port number for the proxy server.
-  optional int32 port = 3;
-}
-
-// Request object to create a client configuration object.
-message CreateClientConfigRequest {
-}