Declarative resource hints go through mojo IPC to //content

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 56 matching lines @@
 #include "content/browser/fileapi/fileapi_message_filter.h"
 #include "content/browser/frame_host/render_frame_message_filter.h"
 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/gpu/shader_disk_cache.h"
 #include "content/browser/histogram_message_filter.h"
 #include "content/browser/indexed_db/indexed_db_context_impl.h"
 #include "content/browser/indexed_db/indexed_db_dispatcher_host.h"
+#include "content/browser/loader/resource_hints_controller.h"
 #include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/loader/resource_scheduler_filter.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/browser/media/capture/image_capture_impl.h"
 #include "content/browser/media/media_internals.h"
 #include "content/browser/media/midi_host.h"
 #include "content/browser/memory/memory_message_filter.h"
 #include "content/browser/message_port_message_filter.h"
 #include "content/browser/mime_registry_impl.h"
 #include "content/browser/mojo/constants.h"
@@ skipping 976 matching lines @@
 void RenderProcessHostImpl::RegisterMojoServices() {
 #if !defined(OS_ANDROID)
   mojo_application_host_->service_registry()->AddService(
       base::Bind(&device::BatteryMonitorImpl::Create));
 #endif
 
   mojo_application_host_->service_registry()->AddService(
       base::Bind(&PermissionServiceContext::CreateService,
                  base::Unretained(permission_service_context_.get())));
 
+  mojo_application_host_->service_registry()->AddService(base::Bind(
+      &ResourceHintsController::RegisterConnection, base::Unretained(this)));
+
   // TODO(mcasas): finalize arguments.
   mojo_application_host_->service_registry()->AddService(
       base::Bind(&ImageCaptureImpl::Create));
 
   mojo_application_host_->service_registry()->AddService(base::Bind(
       &BackgroundSyncContext::CreateService,
       base::Unretained(storage_partition_impl_->GetBackgroundSyncContext())));
 
   mojo_application_host_->service_registry()->AddService(base::Bind(
       &PlatformNotificationContextImpl::CreateService,
@@ skipping 1713 matching lines @@
 
     // Skip widgets in other processes.
     if (rvh->GetProcess()->GetID() != GetID())
       continue;
 
     rvh->OnWebkitPreferencesChanged();
   }
 }
 
 }  // namespace content