Make URLRequestContextBuilderV8 Mojo-only.

net/url_request/url_request_context_builder_mojo.h

+// Copyright 2017 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.
+
+#ifndef NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_MOJO_H_
+#define NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_MOJO_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "build/build_config.h"
+#include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
+#include "net/url_request/url_request_context_builder.h"
+
+namespace net {
+
+class HostResolver;
+class NetLog;
+class NetworkDelegate;
+class MojoProxyResolverFactory;
+class ProxyService;
+class URLRequestContext;
+
+// Specialization of URLRequestContextBuilder that can create a ProxyService
+// that uses a Mojo ProxyResolver. The consumer is responsible for providing
+// the MojoProxyResolverFactory.  If a PoxyService is set directly via the
+// URLRequestContextBuilder API, it will be used instead.
+class URLRequestContextBuilderMojo : public URLRequestContextBuilder {
+ public:
+  URLRequestContextBuilderMojo();
+  ~URLRequestContextBuilderMojo() override;
+
+  // Overrides default DhcpProxyScriptFetcherFactory. Ignored if no
+  // MojoProxyResolverFactory is provided.
+  void set_dhcp_fetcher_factory(
+      std::unique_ptr<DhcpProxyScriptFetcherFactory> dhcp_fetcher_factory) {
+    dhcp_fetcher_factory = std::move(dhcp_fetcher_factory_);
+  }
+
+  // Sets Mojo factory used to create ProxyResolvers. If not set, falls back to
+  // URLRequestContext's default behavior. The passed in factory must outlive
+  // the URLRequestContext the builder creates.
+  void set_mojo_proxy_resolver_factory(
+      MojoProxyResolverFactory* mojo_proxy_resolver_factory) {
+    mojo_proxy_resolver_factory_ = mojo_proxy_resolver_factory;
+  }
+
+ private:
+  std::unique_ptr<ProxyService> CreateProxyService(
+      std::unique_ptr<ProxyConfigService> proxy_config_service,
+      URLRequestContext* url_request_context,
+      HostResolver* host_resolver,
+      NetworkDelegate* network_delegate,
+      NetLog* net_log) override;
+
+  std::unique_ptr<DhcpProxyScriptFetcherFactory> dhcp_fetcher_factory_;
+
+  MojoProxyResolverFactory* mojo_proxy_resolver_factory_ = nullptr;
+
+  DISALLOW_COPY_AND_ASSIGN(URLRequestContextBuilderMojo);
+};
+
+}  // namespace net
+
+#endif  // NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_MOJO_H_