Adding DRP specfic UMA for FirstContentfulPaint

content/browser/frame_host/navigation_request.cc

Index: content/browser/frame_host/navigation_request.cc
diff --git a/content/browser/frame_host/navigation_request.cc b/content/browser/frame_host/navigation_request.cc
index 3ed4510f56f7d6f6c77d83fa6cda73449e46727f..c9d562d2f72dab55de5675cc9665a9e82afc11a7 100644
--- a/content/browser/frame_host/navigation_request.cc
+++ b/content/browser/frame_host/navigation_request.cc
@@ -14,20 +14,21 @@
 #include "content/browser/frame_host/navigation_request_info.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/navigator_impl.h"
 #include "content/browser/loader/navigation_url_loader.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/service_worker/service_worker_navigation_handle.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/common/resource_request_body.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/navigation_controller.h"
+#include "content/public/browser/navigation_data.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/stream_handle.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/resource_response.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_request_headers.h"
 #include "net/url_request/redirect_info.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 
 namespace content {
@@ -267,21 +268,22 @@ void NavigationRequest::OnRequestRedirected(
   // TODO(clamy): pass the real value for |is_external_protocol| if needed.
   navigation_handle_->WillRedirectRequest(
       common_params_.url, common_params_.method, common_params_.referrer.url,
       false, response->head.headers,
       base::Bind(&NavigationRequest::OnRedirectChecksComplete,
                  base::Unretained(this)));
 }
 
 void NavigationRequest::OnResponseStarted(
     const scoped_refptr<ResourceResponse>& response,
-    std::unique_ptr<StreamHandle> body) {
+    std::unique_ptr<StreamHandle> body,
+    std::unique_ptr<NavigationData> navigation_data) {
   DCHECK(state_ == STARTED);
   state_ = RESPONSE_STARTED;
 
   // HTTP 204 (No Content) and HTTP 205 (Reset Content) responses should not
   // commit; they leave the frame showing the previous page.
   DCHECK(response);
   if (response->head.headers.get() &&
       (response->head.headers->response_code() == 204 ||
        response->head.headers->response_code() == 205)) {
     frame_tree_node_->ResetNavigationRequest(false);
@@ -314,20 +316,23 @@ void NavigationRequest::OnResponseStarted(
   // renderer, allow the embedder to cancel the transfer.
   if (!browser_initiated_ &&
       render_frame_host != frame_tree_node_->current_frame_host() &&
       !frame_tree_node_->navigator()
            ->GetDelegate()
            ->ShouldTransferNavigation()) {
     frame_tree_node_->ResetNavigationRequest(false);
     return;
   }
 
+  if (navigation_data)
+    navigation_handle_->set_navigation_data(std::move(navigation_data));
+
   // Store the response and the StreamHandle until checks have been processed.
   response_ = response;
   body_ = std::move(body);
 
   // Check if the navigation should be allowed to proceed.
   navigation_handle_->WillProcessResponse(
       render_frame_host, response->head.headers.get(),
       base::Bind(&NavigationRequest::OnWillProcessResponseChecksComplete,
                  base::Unretained(this)));
 }