Convert network hints to Mojo

chrome/renderer/chrome_render_thread_observer.h

Index: chrome/renderer/chrome_render_thread_observer.h
diff --git a/chrome/renderer/chrome_render_thread_observer.h b/chrome/renderer/chrome_render_thread_observer.h
index d93aec0e0122f0c53f43af4813ec886f31eb9ab8..cf22ad195264e6fe9d43747302767940d9d765e9 100644
--- a/chrome/renderer/chrome_render_thread_observer.h
+++ b/chrome/renderer/chrome_render_thread_observer.h
@@ -27,6 +27,10 @@ namespace content {
 class ResourceDispatcherDelegate;
 }
 
+namespace network_hints {
+class PrescientNetworkingDispatcher;
+}
+
 // This class filters the incoming control messages (i.e. ones not destined for
 // a RenderView) for Chrome specific messages that the content layer doesn't
 // happen.  If a few messages are related, they should probably have their own
@@ -43,6 +47,11 @@ class ChromeRenderThreadObserver : public content::RenderThreadObserver,
   // |ChromeRenderThreadObserver|.
   const RendererContentSettingRules* content_setting_rules() const;
 
+  network_hints::PrescientNetworkingDispatcher*
+  prescient_networking_dispatcher() {
+    return prescient_networking_dispatcher_.get();
+  }
+
  private:
   // Initializes field trial state change observation and notifies the browser
   // of any field trials that might have already been activated.
@@ -50,6 +59,7 @@ class ChromeRenderThreadObserver : public content::RenderThreadObserver,
 
   // content::RenderThreadObserver:
   bool OnControlMessageReceived(const IPC::Message& message) override;
+  void OnRenderProcessShutdown() override;
 
   // base::FieldTrialList::Observer:
   void OnFieldTrialGroupFinalized(const std::string& trial_name,
@@ -68,6 +78,9 @@ class ChromeRenderThreadObserver : public content::RenderThreadObserver,
   RendererContentSettingRules content_setting_rules_;
   chrome_variations::ChildProcessFieldTrialSyncer field_trial_syncer_;
 
+  std::unique_ptr<network_hints::PrescientNetworkingDispatcher>
+      prescient_networking_dispatcher_;
+
   base::WeakPtrFactory<ChromeRenderThreadObserver> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeRenderThreadObserver);