Add FrameNavigationEntry class.

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',
     '../crypto/crypto.gyp:crypto',
     '../device/vibration/vibration.gyp:device_vibration',
     '../device/vibration/vibration.gyp:device_vibration_mojo_bindings',
@@ skipping 618 matching lines @@
       'browser/fileapi/upload_file_system_file_element_reader.h',
       'browser/font_list_async.cc',
       'browser/frame_host/cross_process_frame_connector.cc',
       'browser/frame_host/cross_process_frame_connector.h',
       'browser/frame_host/cross_site_transferring_request.cc',
       'browser/frame_host/cross_site_transferring_request.h',
       'browser/frame_host/debug_urls.cc',
       'browser/frame_host/debug_urls.h',
       'browser/frame_host/frame_accessibility.cc',
       'browser/frame_host/frame_accessibility.h',
+      'browser/frame_host/frame_navigation_entry.cc',
+      'browser/frame_host/frame_navigation_entry.h',
       'browser/frame_host/frame_tree.cc',
       'browser/frame_host/frame_tree.h',
       'browser/frame_host/frame_tree_node.cc',
       'browser/frame_host/frame_tree_node.h',
       'browser/frame_host/interstitial_page_impl.cc',
       'browser/frame_host/interstitial_page_impl.h',
       'browser/frame_host/interstitial_page_navigator_impl.cc',
       'browser/frame_host/interstitial_page_navigator_impl.h',
       'browser/frame_host/navigation_controller_android.cc',
       'browser/frame_host/navigation_controller_android.h',
@@ skipping 1322 matching lines @@
         'browser/media/media_web_contents_observer.h',
       ],
     }],
     ['OS == "linux" and use_openssl==1', {
       'dependencies': [
         '../third_party/boringssl/boringssl.gyp:boringssl',
       ],
     }],
   ],
 }