Add chrome://site-tiles-internals/

chrome/browser/ui/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/chromecast_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 358 matching lines @@
     "webui/metrics_handler.h",
     "webui/mojo_web_ui_controller.cc",
     "webui/mojo_web_ui_controller.h",
     "webui/mojo_web_ui_handler.h",
     "webui/net_export_ui.cc",
     "webui/net_export_ui.h",
     "webui/net_internals/net_internals_ui.cc",
     "webui/net_internals/net_internals_ui.h",
     "webui/ntp/ntp_user_data_logger.cc",
     "webui/ntp/ntp_user_data_logger.h",
+    "webui/ntp_tiles_internals_ui.cc",
+    "webui/ntp_tiles_internals_ui.h",
     "webui/omnibox/omnibox_page_handler.cc",
     "webui/omnibox/omnibox_page_handler.h",
     "webui/omnibox/omnibox_ui.cc",
     "webui/omnibox/omnibox_ui.h",
     "webui/password_manager_internals/password_manager_internals_ui.cc",
     "webui/password_manager_internals/password_manager_internals_ui.h",
     "webui/policy_material_design_ui.cc",
     "webui/policy_material_design_ui.h",
     "webui/policy_ui.cc",
     "webui/policy_ui.h",
@@ skipping 106 matching lines @@
     "//components/dom_distiller/webui",
     "//components/domain_reliability",
     "//components/favicon/content",
     "//components/favicon/core",
     "//components/feedback",
     "//components/flags_ui",
     "//components/gcm_driver",
     "//components/google/core/browser",
     "//components/guest_view/browser",
     "//components/history/content/browser",
+    "//components/image_fetcher",
     "//components/infobars/core",
     "//components/invalidation/impl",
     "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//components/metrics:profiler",
     "//components/mime_util",
     "//components/net_log",
     "//components/ntp_snippets",
     "//components/ntp_tiles",
     "//components/offline_pages/core",
@@ skipping 2972 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }