Declarative resource hints go through mojo IPC to //content

chrome/browser/renderer_host/chrome_render_message_filter.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.
 
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
 
 #include <stdint.h>
 
 #include <string>
 
@@ skipping 47 matching lines @@
       cookie_settings_(CookieSettingsFactory::GetForProfile(profile)) {
 }
 
 ChromeRenderMessageFilter::~ChromeRenderMessageFilter() {
 }
 
 bool ChromeRenderMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChromeRenderMessageFilter, message)
     IPC_MESSAGE_HANDLER(NetworkHintsMsg_DNSPrefetch, OnDnsPrefetch)
-    IPC_MESSAGE_HANDLER(NetworkHintsMsg_Preconnect, OnPreconnect)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_UpdatedCacheStats,
                         OnUpdatedCacheStats)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowDatabase, OnAllowDatabase)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowDOMStorage, OnAllowDOMStorage)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(
         ChromeViewHostMsg_RequestFileSystemAccessSync,
         OnRequestFileSystemAccessSync)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RequestFileSystemAccessAsync,
                         OnRequestFileSystemAccessAsync)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_AllowIndexedDB, OnAllowIndexedDB)
@@ skipping 26 matching lines @@
       break;
   }
 }
 
 void ChromeRenderMessageFilter::OnDnsPrefetch(
     const network_hints::LookupRequest& request) {
   if (predictor_)
     predictor_->DnsPrefetchList(request.hostname_list);
 }
 
-void ChromeRenderMessageFilter::OnPreconnect(const GURL& url,
-                                             bool allow_credentials,
-                                             int count) {
-  if (count < 1) {
-    LOG(WARNING) << "NetworkHintsMsg_Preconnect IPC with invalid count: "
-                 << count;
-    return;
-  }
-  if (predictor_ && url.is_valid() && url.has_host() && url.has_scheme() &&
-      url.SchemeIsHTTPOrHTTPS()) {
-    predictor_->PreconnectUrl(url, GURL(),
-                              chrome_browser_net::UrlInfo::EARLY_LOAD_MOTIVATED,
-                              allow_credentials, count);
-  }
-}
-
 void ChromeRenderMessageFilter::OnUpdatedCacheStats(
     uint64_t min_dead_capacity,
     uint64_t max_dead_capacity,
     uint64_t capacity,
     uint64_t live_size,
     uint64_t dead_size) {
   web_cache::WebCacheManager::GetInstance()->ObserveStats(
       render_process_id_, min_dead_capacity, max_dead_capacity, capacity,
       live_size, dead_size);
 }
@@ skipping 210 matching lines @@
   rappor::SampleString(g_browser_process->rappor_service(), metric,
                        rappor::ETLD_PLUS_ONE_RAPPOR_TYPE, sample);
 }
 
 void ChromeRenderMessageFilter::OnRecordRapporURL(const std::string& metric,
                                                   const GURL& sample) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   rappor::SampleDomainAndRegistryFromGURL(g_browser_process->rappor_service(),
                                           metric, sample);
 }