Add a ResourceScheduler to ResourceDispatcherHost.

content/browser/renderer_host/resource_loader.cc

Index: content/browser/renderer_host/resource_loader.cc
diff --git a/content/browser/renderer_host/resource_loader.cc b/content/browser/renderer_host/resource_loader.cc
index be893d7c97440ff2068932fe1b17f50374fdd48b..02385a0975ce5ff8669620c3c2d334f132cfdb99 100644
--- a/content/browser/renderer_host/resource_loader.cc
+++ b/content/browser/renderer_host/resource_loader.cc
@@ -76,6 +76,19 @@ ResourceLoader::~ResourceLoader() {
   handler_.reset();
 }
 
+
+void ResourceLoader::ScheduleRequest(ResourceScheduler* scheduler) {
+  DCHECK(!load_handle_);
+  ResourceRequestInfoImpl* info = GetRequestInfo();
+  load_handle_ = scheduler->ScheduleLoad(info->GetChildID(),
+                                         info->GetRouteID(),
+                                         this);
+}
+
+const net::URLRequest* ResourceLoader::url_request() {
+  return request();
+}
+
 void ResourceLoader::StartRequest() {
   if (delegate_->HandleExternalProtocol(this, request_->url())) {
     CancelAndIgnore();