Remove network::ResourceRequest custom_proxy_use_alternate_proxy_list

This field is no longer used since DRP removed non-core proxies, so
let's clean it up.

Bug: 945364
Change-Id: Ica6ba2dbaffcca3db1fd366edf725784b63e89c6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2096100
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Reviewed-by: rajendrant <rajendrant@chromium.org>
Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749687}

services/network/public/cpp/resource_request.cc

@@ -70,8 +70,6 @@ bool ResourceRequest::EqualsForTesting(const ResourceRequest& request) const {
              request.custom_proxy_pre_cache_headers.ToString() &&
          custom_proxy_post_cache_headers.ToString() ==
              request.custom_proxy_post_cache_headers.ToString() &&
-         custom_proxy_use_alternate_proxy_list ==
-             request.custom_proxy_use_alternate_proxy_list &&
          fetch_window_id == request.fetch_window_id &&
          devtools_request_id == request.devtools_request_id &&
          is_signed_exchange_prefetch_cache_enabled ==

services/network/public/cpp/resource_request.h

@@ -107,7 +107,6 @@ struct COMPONENT_EXPORT(NETWORK_CPP_BASE) ResourceRequest {
   base::Optional<base::UnguessableToken> throttling_profile_id;
   net::HttpRequestHeaders custom_proxy_pre_cache_headers;
   net::HttpRequestHeaders custom_proxy_post_cache_headers;
-  bool custom_proxy_use_alternate_proxy_list = false;
   base::Optional<base::UnguessableToken> fetch_window_id;
   base::Optional<std::string> devtools_request_id;
   bool is_signed_exchange_prefetch_cache_enabled = false;

services/network/public/cpp/url_request_mojom_traits.h

@@ -227,10 +227,6 @@ struct COMPONENT_EXPORT(NETWORK_CPP_BASE)
       const network::ResourceRequest& request) {
     return request.custom_proxy_post_cache_headers;
   }
-  static bool custom_proxy_use_alternate_proxy_list(
-      const network::ResourceRequest& request) {
-    return request.custom_proxy_use_alternate_proxy_list;
-  }
   static const base::Optional<base::UnguessableToken>& fetch_window_id(
       const network::ResourceRequest& request) {
     return request.fetch_window_id;

services/network/url_loader.cc

@@ -521,8 +521,6 @@ URLLoader::URLLoader(
       first_auth_attempt_(true),
       custom_proxy_pre_cache_headers_(request.custom_proxy_pre_cache_headers),
       custom_proxy_post_cache_headers_(request.custom_proxy_post_cache_headers),
-      custom_proxy_use_alternate_proxy_list_(
-          request.custom_proxy_use_alternate_proxy_list),
       fetch_window_id_(request.fetch_window_id),
       update_network_isolation_key_on_redirect_(
           request.trusted_params

services/network/url_loader.h

@@ -177,10 +177,6 @@ class COMPONENT_EXPORT(NETWORK_SERVICE) URLLoader
     return custom_proxy_post_cache_headers_;
   }
 
-  bool custom_proxy_use_alternate_proxy_list() const {
-    return custom_proxy_use_alternate_proxy_list_;
-  }
-
   const base::Optional<GURL>& new_redirect_url() const {
     return new_redirect_url_;
   }
@@ -411,7 +407,6 @@ class COMPONENT_EXPORT(NETWORK_SERVICE) URLLoader
 
   net::HttpRequestHeaders custom_proxy_pre_cache_headers_;
   net::HttpRequestHeaders custom_proxy_post_cache_headers_;
-  bool custom_proxy_use_alternate_proxy_list_ = false;
 
   // Indicates the originating frame of the request, see
   // network::ResourceRequest::fetch_window_id for details.