Make the fuchsia mojo/public repo the source of truth.

mojo/public/interfaces/network/url_request.mojom

-// 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.
-
-[DartPackage="mojo"]
-module mojo;
-
-import "mojo/public/interfaces/network/http_header.mojom";
-
-struct URLRequest {
-  // Specify the cache behavior of the request.
-  enum CacheMode {
-    // Default behavior.
-    DEFAULT,
-
-    // The HTTP request will bypass the local cache and will have a
-    // 'Cache-Control: nocache' header added in that causes any proxy servers
-    // to also not satisfy the request from their cache.  This has the effect
-    // of forcing a full end-to-end fetch.
-    BYPASS_CACHE,
-
-    // The HTTP request will fail if it cannot serve the requested resource
-    // from the cache (or some equivalent local store).
-    ONLY_FROM_CACHE,
-  };
-
-  // The URL to load.
-  string url;
-
-  // The HTTP method if applicable.
-  string method = "GET";
-
-  // Additional HTTP request headers.
-  array<HttpHeader>? headers;
-
-  // The payload for the request body, represented as a concatenation of data
-  // streams. For HTTP requests, the method must be set to "POST" or "PUT".
-  array<handle<data_pipe_consumer>>? body;
-
-  // The buffer size of the data pipe returned in URLResponse's |body| member.
-  // A value of 0 indicates that the default buffer size should be used.  This
-  // value is just a suggestion. The URLLoader may choose to ignore this value.
-  uint32 response_body_buffer_size = 0;
-
-  // If set to true, then redirects will be automatically followed. Otherwise,
-  // when a redirect is encounterd, FollowRedirect must be called to proceed.
-  bool auto_follow_redirects = false;
-
-  // The cache behavior for the request.
-  CacheMode cache_mode = DEFAULT;
-};