[TooManyTabs] Add TabNavigationThrottle

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 3369 matching lines @@
       "renderer_context_menu/open_with_menu_factory.cc",
       "renderer_context_menu/open_with_menu_factory.h",
       "renderer_context_menu/render_view_context_menu.cc",
       "renderer_context_menu/render_view_context_menu.h",
       "renderer_context_menu/spelling_bubble_model.cc",
       "renderer_context_menu/spelling_bubble_model.h",
       "renderer_context_menu/spelling_menu_observer.cc",
       "renderer_context_menu/spelling_menu_observer.h",
       "repost_form_warning_controller.cc",
       "repost_form_warning_controller.h",
+      "resource_coordinator/background_tab_navigation_throttle.cc",
+      "resource_coordinator/background_tab_navigation_throttle.h",
       "resource_coordinator/tab_manager.cc",
       "resource_coordinator/tab_manager.h",
       "resource_coordinator/tab_manager_delegate_chromeos.cc",
       "resource_coordinator/tab_manager_delegate_chromeos.h",
       "resource_coordinator/tab_manager_observer.cc",
       "resource_coordinator/tab_manager_observer.h",
       "resource_coordinator/tab_manager_web_contents_data.cc",
       "resource_coordinator/tab_manager_web_contents_data.h",
       "resource_coordinator/tab_stats.cc",
       "resource_coordinator/tab_stats.h",
@@ skipping 1209 matching lines @@
       "//components/search_engines",
       "//rlz:rlz_lib",
     ]
   }
 }
 
 service_manifest("preferences_forwarder_manifest") {
   name = "preferences_forwarder"
   source = "prefs/forwarder_manifest.json"
 }