Adding DRP specfic UMA for FirstContentfulPaint

content/test/test_web_contents.cc

Index: content/test/test_web_contents.cc
diff --git a/content/test/test_web_contents.cc b/content/test/test_web_contents.cc
index 1233696ab82fd787bad8fb9445912e2577f623c2..898fb1f69320060223531eaa777735911392137b 100644
--- a/content/test/test_web_contents.cc
+++ b/content/test/test_web_contents.cc
@@ -2,26 +2,28 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/test/test_web_contents.h"
 
 #include <utility>
 
 #include "content/browser/browser_url_handler_impl.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/frame_host/navigation_handle_impl.h"
 #include "content/browser/frame_host/navigator.h"
 #include "content/browser/frame_host/navigator_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_messages.h"
+#include "content/public/browser/navigation_data.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/page_state.h"
 #include "content/public/test/mock_render_process_host.h"
 #include "content/test/test_render_view_host.h"
 #include "ui/base/page_transition_types.h"
 
 namespace content {
@@ -306,20 +308,27 @@ void TestWebContents::TestDidFinishLoad(const GURL& url) {
 void TestWebContents::TestDidFailLoadWithError(
     const GURL& url,
     int error_code,
     const base::string16& error_description,
     bool was_ignored_by_handler) {
   FrameHostMsg_DidFailLoadWithError msg(
       0, url, error_code, error_description, was_ignored_by_handler);
   frame_tree_.root()->current_frame_host()->OnMessageReceived(msg);
 }
 
+void TestWebContents::SetNavigationData(
+    NavigationHandle* navigation_handle,
+    std::unique_ptr<NavigationData> navigation_data) {
+  static_cast<NavigationHandleImpl*>(navigation_handle)
+      ->set_navigation_data(std::move(navigation_data));
+}
+
 void TestWebContents::CreateNewWindow(
     SiteInstance* source_site_instance,
     int32_t route_id,
     int32_t main_frame_route_id,
     int32_t main_frame_widget_route_id,
     const ViewHostMsg_CreateWindow_Params& params,
     SessionStorageNamespace* session_storage_namespace) {}
 
 void TestWebContents::CreateNewWidget(int32_t render_process_id,
                                       int32_t route_id,