New TimeToFirstURLJob* navigation metrics now work with PlzNavigate.

content/browser/loader/navigation_url_loader_impl_core.cc

 // Copyright 2014 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 "content/browser/loader/navigation_url_loader_impl_core.h"
 
 #include "base/bind.h"
 #include "base/location.h"
+#include "base/time/time.h"
 #include "content/browser/frame_host/navigation_request_info.h"
 #include "content/browser/loader/navigation_resource_handler.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/common/navigation_params.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/stream_handle.h"
 #include "content/public/common/resource_response.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/redirect_info.h"
 
@@ skipping 16 matching lines @@
 }
 
 void NavigationURLLoaderImplCore::Start(
     ResourceContext* resource_context,
     int64 frame_tree_node_id,
     const CommonNavigationParams& common_params,
     scoped_ptr<NavigationRequestInfo> request_info,
     ResourceRequestBody* request_body) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&NavigationURLLoaderImpl::NotifyRequestStarted, loader_,
+                 base::TimeTicks::Now()));
+
   ResourceDispatcherHostImpl::Get()->BeginNavigationRequest(
       resource_context, frame_tree_node_id,
       common_params, *request_info, request_body,
       this);
 }
 
 void NavigationURLLoaderImplCore::FollowRedirect() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   if (resource_handler_)
@@ skipping 40 matching lines @@
 void NavigationURLLoaderImplCore::NotifyRequestFailed(int net_error) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&NavigationURLLoaderImpl::NotifyRequestFailed, loader_,
                  net_error));
 }
 
 }  // namespace content