Add a Dns preresolve interface in //content

content/browser/loader/resource_dispatcher_host_impl.cc

 // Copyright (c) 2012 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 
 #include <stddef.h>
 
@@ skipping 37 matching lines @@
 #include "content/browser/loader/async_resource_handler.h"
 #include "content/browser/loader/async_revalidation_manager.h"
 #include "content/browser/loader/cross_site_resource_handler.h"
 #include "content/browser/loader/detachable_resource_handler.h"
 #include "content/browser/loader/mime_type_resource_handler.h"
 #include "content/browser/loader/navigation_resource_handler.h"
 #include "content/browser/loader/navigation_resource_throttle.h"
 #include "content/browser/loader/navigation_url_loader_impl_core.h"
 #include "content/browser/loader/power_save_block_resource_throttle.h"
 #include "content/browser/loader/redirect_to_file_resource_handler.h"
+#include "content/browser/loader/resource_hints_controller.h"
 #include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/browser/loader/stream_resource_handler.h"
 #include "content/browser/loader/sync_resource_handler.h"
 #include "content/browser/loader/throttling_resource_handler.h"
 #include "content/browser/loader/upload_data_stream_builder.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/resource_context_impl.h"
 #include "content/browser/service_worker/foreign_fetch_request_handler.h"
@@ skipping 1069 matching lines @@
 
   if (delegate_)
     delegate_->RequestComplete(loader->request());
 
   // Destroy the ResourceLoader.
   RemovePendingRequest(info->GetChildID(), info->GetRequestID());
 }
 
 void ResourceDispatcherHostImpl::OnInit() {
   scheduler_.reset(new ResourceScheduler);
+  resource_hints_controller_.reset(new ResourceHintsController);
 }
 
 void ResourceDispatcherHostImpl::OnShutdown() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   is_shutdown_ = true;
   pending_loaders_.clear();
 
   // Make sure we shutdown the timer now, otherwise by the time our destructor
   // runs if the timer is still running the Task is deleted twice (once by
   // the MessageLoop and the second time by RepeatingTimer).
   update_load_states_timer_.reset();
 
   // Clear blocked requests if any left.
   // Note that we have to do this in 2 passes as we cannot call
   // CancelBlockedRequestsForRoute while iterating over
   // blocked_loaders_map_, as it modifies it.
   std::set<GlobalFrameRoutingId> ids;
   for (const auto& blocked_loaders : blocked_loaders_map_) {
     std::pair<std::set<GlobalFrameRoutingId>::iterator, bool> result =
         ids.insert(blocked_loaders.first);
     // We should not have duplicates.
     DCHECK(result.second);
   }
   for (const auto& routing_id : ids) {
     CancelBlockedRequestsForRoute(routing_id);
   }
 
   scheduler_.reset();
+  resource_hints_controller_.reset();
 }
 
 bool ResourceDispatcherHostImpl::OnMessageReceived(
     const IPC::Message& message,
     ResourceMessageFilter* filter) {
   filter_ = filter;
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ResourceDispatcherHostImpl, message)
     IPC_MESSAGE_HANDLER(ResourceHostMsg_RequestResource, OnRequestResource)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(ResourceHostMsg_SyncLoad, OnSyncLoad)
@@ skipping 1504 matching lines @@
   ssl.cert_id = GetCertStore()->StoreCert(ssl_info.cert.get(), child_id);
   response->head.security_info = SerializeSecurityInfo(ssl);
 }
 
 CertStore* ResourceDispatcherHostImpl::GetCertStore() {
   return cert_store_for_testing_ ? cert_store_for_testing_
                                  : CertStore::GetInstance();
 }
 
 }  // namespace content