Revert of Convert network hints to Mojo

chrome/renderer/chrome_render_thread_observer.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/renderer/chrome_render_thread_observer.h"
 
 #include <stddef.h>
 
 #include <limits>
 #include <memory>
@@ skipping 19 matching lines @@
 #include "chrome/common/child_process_logging.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/media/media_resource_provider.h"
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/resource_usage_reporter.mojom.h"
 #include "chrome/common/resource_usage_reporter_type_converters.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/renderer/content_settings_observer.h"
 #include "chrome/renderer/security_filter_peer.h"
-#include "components/network_hints/renderer/prescient_networking_dispatcher.h"
 #include "content/public/child/resource_dispatcher_delegate.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "content/public/renderer/render_view_visitor.h"
 #include "media/base/media_resources.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_module.h"
 #include "services/shell/public/cpp/interface_registry.h"
 #include "third_party/WebKit/public/web/WebCache.h"
@@ skipping 178 matching lines @@
     base::WeakPtr<ChromeRenderThreadObserver> observer,
     mojo::InterfaceRequest<mojom::ResourceUsageReporter> request) {
   new ResourceUsageReporterImpl(observer, std::move(request));
 }
 
 }  // namespace
 
 bool ChromeRenderThreadObserver::is_incognito_process_ = false;
 
 ChromeRenderThreadObserver::ChromeRenderThreadObserver()
-    : field_trial_syncer_(this),
-      prescient_networking_dispatcher_(
-          new network_hints::PrescientNetworkingDispatcher()),
-      weak_factory_(this) {
+    : field_trial_syncer_(this), weak_factory_(this) {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   RenderThread* thread = RenderThread::Get();
   resource_delegate_.reset(new RendererResourceDelegate());
   thread->SetResourceDispatcherDelegate(resource_delegate_.get());
 
   thread->GetInterfaceRegistry()->AddInterface(
       base::Bind(CreateResourceUsageReporter, weak_factory_.GetWeakPtr()));
 
@@ skipping 27 matching lines @@
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsIncognitoProcess,
                         OnSetIsIncognitoProcess)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetFieldTrialGroup, OnSetFieldTrialGroup)
     IPC_MESSAGE_HANDLER(ChromeViewMsg_SetContentSettingRules,
                         OnSetContentSettingRules)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-void ChromeRenderThreadObserver::OnRenderProcessShutdown() {
-  prescient_networking_dispatcher_.reset();
-}
-
 void ChromeRenderThreadObserver::OnFieldTrialGroupFinalized(
     const std::string& trial_name,
     const std::string& group_name) {
   content::RenderThread::Get()->Send(
       new ChromeViewHostMsg_FieldTrialActivated(trial_name));
 }
 
 void ChromeRenderThreadObserver::OnSetIsIncognitoProcess(
     bool is_incognito_process) {
   is_incognito_process_ = is_incognito_process;
 }
 
 void ChromeRenderThreadObserver::OnSetContentSettingRules(
     const RendererContentSettingRules& rules) {
   content_setting_rules_ = rules;
 }
 
 void ChromeRenderThreadObserver::OnSetFieldTrialGroup(
     const std::string& trial_name,
     const std::string& group_name) {
   field_trial_syncer_.OnSetFieldTrialGroup(trial_name, group_name);
 }
 
 const RendererContentSettingRules*
 ChromeRenderThreadObserver::content_setting_rules() const {
   return &content_setting_rules_;
 }