(DEPRECATED) Send navigation_start to browser process in DidStartProvisionalLoad

content/browser/frame_host/navigator_impl.cc

Index: content/browser/frame_host/navigator_impl.cc
diff --git a/content/browser/frame_host/navigator_impl.cc b/content/browser/frame_host/navigator_impl.cc
index 5d9f22528208fe1beaa2dd7ec1b3c455b248e52c..aa7e8716f2841581815c58eb1359284d9cffcde1 100644
--- a/content/browser/frame_host/navigator_impl.cc
+++ b/content/browser/frame_host/navigator_impl.cc
@@ -119,7 +119,8 @@ NavigationController* NavigatorImpl::GetController() {
 
 void NavigatorImpl::DidStartProvisionalLoad(
     RenderFrameHostImpl* render_frame_host,
-    const GURL& url) {
+    const GURL& url,
+    double navigation_start) {
   bool is_main_frame = render_frame_host->frame_tree_node()->IsMainFrame();
   bool is_error_page = (url.spec() == kUnreachableWebDataURL);
   bool is_iframe_srcdoc = (url.spec() == kAboutSrcDocURL);
@@ -160,7 +161,7 @@ void NavigatorImpl::DidStartProvisionalLoad(
   }
 
   render_frame_host->SetNavigationHandle(NavigationHandleImpl::Create(
-      validated_url, render_frame_host->frame_tree_node()));
+      validated_url, render_frame_host->frame_tree_node(), navigation_start));
 }
 
 void NavigatorImpl::DidFailProvisionalLoadWithError(
@@ -686,7 +687,8 @@ void NavigatorImpl::OnBeginNavigation(
           controller_->GetLastCommittedEntryIndex(),
           controller_->GetEntryCount()));
   NavigationRequest* navigation_request = frame_tree_node->navigation_request();
-  navigation_request->CreateNavigationHandle();
+  navigation_request->CreateNavigationHandle(
+      begin_params.renderer_navigation_start);
 
   if (frame_tree_node->IsMainFrame()) {
     // Renderer-initiated main-frame navigations that need to swap processes
@@ -855,7 +857,10 @@ void NavigatorImpl::RequestNavigation(
           navigation_type, is_same_document_history_load, navigation_start,
           controller_));
   NavigationRequest* navigation_request = frame_tree_node->navigation_request();
-  navigation_request->CreateNavigationHandle();
+
+  double navigation_start_seconds =
+      (navigation_start - base::TimeTicks()).InSecondsF();
+  navigation_request->CreateNavigationHandle(navigation_start_seconds);
 
   // Have the current renderer execute its beforeunload event if needed. If it
   // is not needed (when beforeunload dispatch is not needed or this navigation