Update from https://crrev.com/307664

net/base/network_delegate_impl.cc

+// Copyright 2014 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/base/network_delegate_impl.h"
+
+#include "net/base/net_errors.h"
+
+namespace net {
+
+int NetworkDelegateImpl::OnBeforeURLRequest(URLRequest* request,
+                                            const CompletionCallback& callback,
+                                            GURL* new_url) {
+  return OK;
+}
+
+void NetworkDelegateImpl::OnResolveProxy(const GURL& url,
+                                         int load_flags,
+                                         const ProxyService& proxy_service,
+                                         ProxyInfo* result) {
+}
+
+void NetworkDelegateImpl::OnProxyFallback(const ProxyServer& bad_proxy,
+                                          int net_error) {
+}
+
+int NetworkDelegateImpl::OnBeforeSendHeaders(URLRequest* request,
+                                             const CompletionCallback& callback,
+                                             HttpRequestHeaders* headers) {
+  return OK;
+}
+
+void NetworkDelegateImpl::OnBeforeSendProxyHeaders(
+    URLRequest* request,
+    const ProxyInfo& proxy_info,
+    HttpRequestHeaders* headers) {
+}
+
+void NetworkDelegateImpl::OnSendHeaders(URLRequest* request,
+                                        const HttpRequestHeaders& headers) {
+}
+
+int NetworkDelegateImpl::OnHeadersReceived(
+    URLRequest* request,
+    const CompletionCallback& callback,
+    const HttpResponseHeaders* original_response_headers,
+    scoped_refptr<HttpResponseHeaders>* override_response_headers,
+    GURL* allowed_unsafe_redirect_url) {
+  return OK;
+}
+
+void NetworkDelegateImpl::OnBeforeRedirect(URLRequest* request,
+                                           const GURL& new_location) {
+}
+
+void NetworkDelegateImpl::OnResponseStarted(URLRequest* request) {
+}
+
+void NetworkDelegateImpl::OnRawBytesRead(const URLRequest& request,
+                                         int bytes_read) {
+}
+
+void NetworkDelegateImpl::OnCompleted(URLRequest* request, bool started) {
+}
+
+void NetworkDelegateImpl::OnURLRequestDestroyed(URLRequest* request) {
+}
+
+void NetworkDelegateImpl::OnPACScriptError(int line_number,
+                                           const base::string16& error) {
+}
+
+NetworkDelegate::AuthRequiredResponse NetworkDelegateImpl::OnAuthRequired(
+    URLRequest* request,
+    const AuthChallengeInfo& auth_info,
+    const AuthCallback& callback,
+    AuthCredentials* credentials) {
+  return AUTH_REQUIRED_RESPONSE_NO_ACTION;
+}
+
+bool NetworkDelegateImpl::OnCanGetCookies(const URLRequest& request,
+                                          const CookieList& cookie_list) {
+  return true;
+}
+
+bool NetworkDelegateImpl::OnCanSetCookie(const URLRequest& request,
+                                         const std::string& cookie_line,
+                                         CookieOptions* options) {
+  return true;
+}
+
+bool NetworkDelegateImpl::OnCanAccessFile(const URLRequest& request,
+                                          const base::FilePath& path) const {
+  return false;
+}
+
+bool NetworkDelegateImpl::OnCanThrottleRequest(
+    const URLRequest& request) const {
+  return false;
+}
+
+bool NetworkDelegateImpl::OnCanEnablePrivacyMode(
+    const GURL& url,
+    const GURL& first_party_for_cookies) const {
+  return false;
+}
+
+bool NetworkDelegateImpl::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
+    const URLRequest& request,
+    const GURL& target_url,
+    const GURL& referrer_url) const {
+  return false;
+}
+
+}  // namespace net