Adding DRP specfic UMA for FirstContentfulPaint

content/content_browser.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/mime_util/mime_util.gyp:mime_util',
@@ skipping 740 matching lines @@
       'browser/frame_host/navigation_entry_impl.cc',
       'browser/frame_host/navigation_entry_impl.h',
       'browser/frame_host/navigation_entry_screenshot_manager.cc',
       'browser/frame_host/navigation_entry_screenshot_manager.h',
       'browser/frame_host/navigation_handle_impl.cc',
       'browser/frame_host/navigation_handle_impl.h',
       'browser/frame_host/navigation_request.cc',
       'browser/frame_host/navigation_request.h',
       'browser/frame_host/navigation_request_info.cc',
       'browser/frame_host/navigation_request_info.h',
+      'browser/frame_host/navigation_user_data.cc',
+      'browser/frame_host/navigation_user_data.h',
       'browser/frame_host/navigator.cc',
       'browser/frame_host/navigator.h',
       'browser/frame_host/navigator_delegate.cc',
       'browser/frame_host/navigator_delegate.h',
       'browser/frame_host/navigator_impl.cc',
       'browser/frame_host/navigator_impl.h',
       'browser/frame_host/popup_menu_helper_mac.h',
       'browser/frame_host/popup_menu_helper_mac.mm',
       'browser/frame_host/render_frame_host_delegate.cc',
       'browser/frame_host/render_frame_host_delegate.h',
@@ skipping 1437 matching lines @@
     ['enable_webvr==1 and OS=="android"', {
       'sources': [
         'browser/vr/android/cardboard/cardboard_vr_device.cc',
         'browser/vr/android/cardboard/cardboard_vr_device.h',
         'browser/vr/android/cardboard/cardboard_vr_device_provider.cc',
         'browser/vr/android/cardboard/cardboard_vr_device_provider.h',
       ],
     }],
   ],
 }